Site name Reason for designation Area Location & map ref Year in which notified Other designations Map/Refs Biological interest Geological interest Hectares Acres  Allington Meadows   Y 3.8 9.3  52°56′53″N 0°42′25″W   /  52.948°N 0.707°W   / 52.948; -0.707   (Allington Meadows )          SK870397   1987  Map    [ 2]   Ancaster Valley   Y 10.3 25.4  52°58′30″N 0°31′59″W   /  52.975°N 0.533°W   / 52.975; -0.533   (Ancaster Valley )          SK986430   1951  WT , NCR    Map    [ 3]   Bardney Limewoods   Y 539.8 1,333.9  53°14′49″N 0°17′06″W   /  53.247°N 0.285°W   / 53.247; -0.285   (Bardney Limewoods, Lincolnshire )          TF145736   1959  NNR , NCR ,  Map    [ 4]   Baston And Thurlby Fens   Y 54.6 134.9  52°44′10″N 0°20′06″W   /  52.736°N 0.335°W   / 52.736; -0.335   (Baston And Thurlby Fens )          TF125167   1968  WT , NCR , SAC    Map    [ 5]   Belshaw   Y 0.2 0.5  53°32′38″N 0°50′31″W   /  53.544°N 0.842°W   / 53.544; -0.842   (Belshaw )          SE768059   1988  Map    [ 6]   Benniworth Haven Cuttings   Y 2.4 5.9  53°19′26″N 0°09′43″W   /  53.324°N 0.162°W   / 53.324; -0.162   (Benniworth Haven Cuttings )          TF225824   1966  GCR    Map    [ 7]   Bratoft Meadows   Y 2.3 5.6  53°09′07″N 0°13′05″E   /  53.152°N 0.218°E   / 53.152; 0.218   (Bratoft Meadows )          TF484639   1968  WT , NCR    Map    [ 8]   Broughton Alder Wood   Y 0.8 2  53°34′37″N 0°33′07″W   /  53.577°N 0.552°W   / 53.577; -0.552   (Broughton Alder Wood )          SE960099   1986  Map    [ 9]   Broughton Far Wood   Y 17.8 44  53°34′59″N 0°33′04″W   /  53.583°N 0.551°W   / 53.583; -0.551   (Broughton Far Wood )          SE960106   1957  Map    [ 10]   Calceby Marsh   Y 8.8 21.8  53°16′23″N 0°05′38″E   /  53.273°N 0.094°E   / 53.273; 0.094   (Calceby Marsh )          TF397772   1970  WT , NCR    Map    [ 11]   Candlesby Hill Quarry   Y 1.8 4.5  53°11′28″N 0°11′02″E   /  53.191°N 0.184°E   / 53.191; 0.184   (Candlesby Hill )          TF460682   1966  WT    Map    [ 12]   Castle Bytham Quarry   Y 5.5 13.6  52°45′00″N 0°32′10″W   /  52.75°N 0.536°W   / 52.75; -0.536   (Castle Bytham Quarry )          SK989179   1981  GCR    Map    [ 13]   Castlethorpe Tufas   Y 0.5 1.3  53°33′25″N 0°31′30″W   /  53.557°N 0.525°W   / 53.557; -0.525   (Castlethorpe Tufas )          SE978077   1989  GCR    Map    [ 14]   Chapel Point-wolla Bank   Y 39.7 98.0  53°14′31″N 0°20′10″E   /  53.242°N 0.336°E   / 53.242; 0.336   (Chapel Point-Wolla Bank )          TF560742   2002  GCR    Map    [ 15]   Claxby Chalk Pit   Y Y 2.2 5.5  53°13′23″N 0°10′12″E   /  53.223°N 0.17°E   / 53.223; 0.17   (Claxby Chalk Pit )          TF450717   1968  GCR , WT    Map    [ 16]   Cleatham Quarry   Y 5.8 14.2  53°30′04″N 0°35′02″W   /  53.501°N 0.584°W   / 53.501; -0.584   (Cleatham Quarry )          SE940014   1986  Map    [ 17]   Cliff Farm Pit   Y 1.1 2.8  53°29′42″N 0°34′59″W   /  53.495°N 0.583°W   / 53.495; -0.583   (Cliff Farm Pit )          SE941008   1985  GCR    Map    [ 18]   Cliff House   Y 4.8 11.7  53°26′46″N 0°32′56″W   /  53.446°N 0.549°W   / 53.446; -0.549   (Cliff House )          SK965953   1966  Map    [ 19]   Copper Hill   Y 6.6 16.4  52°58′19″N 0°32′42″W   /  52.972°N 0.545°W   / 52.972; -0.545   (Copper Hill )          SK978426   1950  GCR    Map    [ 20]   Conesby (Yorkshire East) Quarry   Y 0.9 2.2  53°37′19″N 0°38′10″W   /  53.622°N 0.636°W   / 53.622; -0.636   (Conesby  (Yorkshire East) Quarry )          SE903148   1995  GCR    Map    [ 21]   Cowbit Wash   Y 9.1 22.4  52°45′18″N 0°09′50″W   /  52.755°N 0.164°W   / 52.755; -0.164   (Cowbit Wash )          TF240191   1999  GCR    Map    [ 22]   Cross Drain   Y 5.7 14.2  52°42′32″N 0°17′02″W   /  52.709°N 0.284°W   / 52.709; -0.284   (Cross Drain )          TF160137   1991  Map    [ 23]   Crowle Borrow Pits   Y 4.9 12.2  53°35′10″N 0°48′29″W   /  53.586°N 0.808°W   / 53.586; -0.808   (Crowle Borrow Pits )          SE790106   1986  Map    [ 24]   Dalby Hill   Y 0.2 0.5  53°12′14″N 0°06′25″E   /  53.204°N 0.107°E   / 53.204; 0.107   (Dalby Hill )          TF408695   1986  GCR    Map    [ 25]   Deeping Gravel Pits   Y 57.6 142.3  52°39′32″N 0°15′36″W   /  52.659°N 0.26°W   / 52.659; -0.26   (Deeping Gravel Pits )          TF178082   1968 Wildlife refuge  Map    [ 26]   Doddington Clay Woods   Y 23.9 59.0  53°13′41″N 0°39′07″W   /  53.228°N 0.652°W   / 53.228; -0.652   (Doddington Clay Woods )          SK901710   1987  Map    [ 27]   Dole Wood   Y 4.0 9.8  52°43′55″N 0°23′10″W   /  52.732°N 0.386°W   / 52.732; -0.386   (Dole Wood )          TF091161   1968  WT    Map    [ 28]   Dunsby Wood   Y 54.6 134.8  52°49′12″N 0°23′06″W   /  52.82°N 0.385°W   / 52.82; -0.385   (Dunsby Wood )          TF089259   1968  Map    [ 29]   Eastoft Meadow   Y 0.8 2.1  53°37′05″N 0°48′47″W   /  53.618°N 0.813°W   / 53.618; -0.813   (Eastoft Meadow )          SE786142   1985  Map    [ 30]   Epworth Turbary   Y 32.9 81.3  53°31′34″N 0°51′50″W   /  53.526°N 0.864°W   / 53.526; -0.864   (Epworth Turbary )          SE754039   1951  WT    Map    [ 31]   Fulsby Wood   Y 109.3 270.0  53°08′02″N 0°07′26″W   /  53.134°N 0.124°W   / 53.134; -0.124   (Fulsby Wood )          TF256613   1986  Map    [ 32]   Gibraltar Point   Y 598.2 1,478.3  53°06′11″N 0°19′59″E   /  53.103°N 0.333°E   / 53.103; 0.333   (Gibraltar Point )          TF563587   1951 Bird sanctuary, SPA , GCR , LNR , WT , NNR , NCR , Ramsar site , SAC    Map    [ 33]   Gosling's Corner   Y 10.2 25.1  53°15′43″N 0°17′20″W   /  53.262°N 0.289°W   / 53.262; -0.289   (Gosling'S Corner )          TF142752   1988  Map    [ 34]   Great Casterton Road Banks   Y 0.4 1  52°39′47″N 0°30′54″W   /  52.663°N 0.515°W   / 52.663; -0.515   (Great Casterton Road Banks )          TF005083   1959  WT    Map    [ 35]   Greetwell Hollow Quarry   Y 59.3 146.6  53°14′10″N 0°29′49″W   /  53.236°N 0.497°W   / 53.236; -0.497   (Greetwell Hollow Quarry )          TF004721   1951  GCR    Map    [ 36]   Grimsthorpe Park   Y 116.4 287.7  52°45′47″N 0°29′13″W   /  52.763°N 0.487°W   / 52.763; -0.487   (Grimsthorpe Park )          TF022194   1969  SAC ,  Map    [ 37]   Hainton Sheepwalk   Y 2.5 6.3  53°21′32″N 0°13′19″W   /  53.359°N 0.222°W   / 53.359; -0.222   (Hainton Sheepwalk )          TF184861   1989  Map    [ 38]   Harrington Hall Sand Pit   Y 0.1 0.2  53°13′37″N 0°02′13″E   /  53.227°N 0.037°E   / 53.227; 0.037   (Harrington Hall Sand Pit )          TF361719   1986  GCR    Map    [ 39]   Hatfield Chase Ditches   Y 44.2 109.2  53°32′31″N 0°53′17″W   /  53.542°N 0.888°W   / 53.542; -0.888   (Hatfield Chase Ditches )          SE738056   1999  Map    [ 40]   Haxey Grange Fen   Y 13.3 32.8  53°27′58″N 0°53′24″W   /  53.466°N 0.89°W   / 53.466; -0.89   (Haxey Grange Fen )          SK738972   1988  Map    [ 41]   Haxey Turbary   Y 14.4 35.6  53°30′29″N 0°52′26″W   /  53.508°N 0.874°W   / 53.508; -0.874   (Haxey Turbary )          SE748018   1951  WT    Map    [ 42]   Hewson's Field   Y 0.5 1.2  53°29′10″N 0°49′05″W   /  53.486°N 0.818°W   / 53.486; -0.818   (Hewson'S Field )          SK785995   1991  Map    [ 43]   High Barn, Oxcombe   Y 8.3 20.4  53°16′16″N 0°01′16″W   /  53.271°N 0.021°W   / 53.271; -0.021   (High Barn, Oxcombe )          TF321767   1966  Map    [ 44]   High Dyke   Y 6.8 16.7  53°02′28″N 0°31′30″W   /  53.041°N 0.525°W   / 53.041; -0.525   (High Dyke )          SK990503   1951  Map    [ 45]   Holywell Banks   Y 6.1 15.1  52°43′48″N 0°31′44″W   /  52.73°N 0.529°W   / 52.73; -0.529   (Holywell Banks )          SK994157   1951  Map    [ 46]   Honington Camp   Y 1.4 3.5  52°58′12″N 0°34′52″W   /  52.97°N 0.581°W   / 52.97; -0.581   (Honington Camp )          SK954423   1968  SAM    Map    [ 47]   Hoplands Wood   Y 14.2 35.0  53°13′16″N 0°11′02″E   /  53.221°N 0.184°E   / 53.221; 0.184   (Hoplands Wood )          TF459715   1966  WT    Map    [ 48]   Horbling Fen   Y 15.1 37.3  52°54′07″N 0°17′24″W   /  52.902°N 0.29°W   / 52.902; -0.29   (Horbling Fen )          TF151352   1999  GCR    Map    [ 49]   Humber Estuary   Y Y 37,000.6 91,430.5  53°34′41″N 0°01′48″E   /  53.578°N 0.03°E   / 53.578; 0.03   (Humber Estuary )          TA345110   2004  SPA , GCR , MOD , NNR , Ramsar site , SAC    Map    [ 50]   Hundleby Clay Pit   Y 0.8 1.9  53°10′23″N 0°03′58″E   /  53.173°N 0.066°E   / 53.173; 0.066   (Hundleby Clay Pit )          TF382660   1986  GCR ,  Map    [ 51]   Jenkins Carr   Y 3.7 9.1  53°09′22″N 0°04′23″E   /  53.156°N 0.073°E   / 53.156; 0.073   (Jenkins Carr )          TF387641   1966  Map    [ 52]   Keal Carr   Y 9.4 23.1  53°09′43″N 0°03′58″E   /  53.162°N 0.066°E   / 53.162; 0.066   (Keal Carr )          TF382648   1968  WT    Map    [ 53]   Kingerby Beck Meadows   Y 5.5 13.6  53°25′41″N 0°25′05″W   /  53.428°N 0.418°W   / 53.428; -0.418   (Kingerby Beck Meadows )          TF052935   1988  Map    [ 54]   Kirkby Moor   Y 73.6 181.9  53°08′38″N 0°10′12″W   /  53.144°N 0.17°W   / 53.144; -0.17   (Kirkby Moor )          TF225623   1966  WT ,  Map    [ 55]   Kirmington Pits   Y 9.1 22.5  53°35′20″N 0°20′06″W   /  53.589°N 0.335°W   / 53.589; -0.335   (Kirmington Pits )          TA103116   1951  GCR    Map    [ 56]   Kirton Wood, Lincolnshire   Y 30.3 74.9  52°52′55″N 0°32′42″W   /  52.882°N 0.545°W   / 52.882; -0.545   (Kirton Wood, Lincolnshire )          SK980326   1968  NCR    Map    [ 57]   Langtoft Gravel Pits   Y 28.4 70.3  52°41′02″N 0°21′22″W   /  52.684°N 0.356°W   / 52.684; -0.356   (Langtoft Gravel Pits )          TF112109   1968  Map    [ 58]   Laughton Common   Y 54.7 135.2  53°27′36″N 0°44′28″W   /  53.46°N 0.741°W   / 53.46; -0.741   (Laughton Common )          SK837967   1999  Map    [ 59]   Lea Marsh   Y 27.6 68.1  53°22′26″N 0°46′19″W   /  53.374°N 0.772°W   / 53.374; -0.772   (Lea Marsh )          SK818870   1998  Map    [ 60]   Linwood Warren   Y 25.7 63.5  53°22′19″N 0°18′07″W   /  53.372°N 0.302°W   / 53.372; -0.302   (Linwood Warren )          TF131875   1966  WT    Map    [ 61]   Little Scrubbs Meadow   Y 2.0 4.9  53°15′11″N 0°17′02″W   /  53.253°N 0.284°W   / 53.253; -0.284   (Little Scrubbs Meadow )          TF146743   1988  WT    Map    [ 62]   Manton and Twigmoor   Y 88.9 219.6  53°31′34″N 0°34′59″W   /  53.526°N 0.583°W   / 53.526; -0.583   (Manton and Twigmoor )          SE940042   1951  Map    [ 63]   Manton Stone Quarry   Y 17.5 43.2  53°30′36″N 0°35′02″W   /  53.51°N 0.584°W   / 53.51; -0.584   (Manton Stone Quarry )          SE940024   1986  GCR    Map    [ 64]   Math And Elsea Wood   Y 44.2 109.3  52°45′04″N 0°22′34″W   /  52.751°N 0.376°W   / 52.751; -0.376   (Math And Elsea Wood )          TF097183   1988  Map    [ 65]   Mavis Enderby Valley   Y 15.7 38.8  53°10′52″N 0°02′17″E   /  53.181°N 0.038°E   / 53.181; 0.038   (Mavis Enderby Valley )          TF363668   1988  Map    [ 66]   Messingham Heath   Y 17.8 43.9  53°31′08″N 0°40′55″W   /  53.519°N 0.682°W   / 53.519; -0.682   (Messingham Heath )          SE875033   1965  Map    [ 67]   Messingham Sand Quarry   Y 51.8 128  53°31′12″N 0°37′34″W   /  53.52°N 0.626°W   / 53.52; -0.626   (Messingham Sand Quarry )          SE912035   1987  WT    Map    [ 68]   Metheringham Heath Quarry   Y 12.8 31.5  53°08′24″N 0°25′37″W   /  53.14°N 0.427°W   / 53.14; -0.427   (Metheringham Heath Quarry )          TF053615   1981  GCR    Map    [ 69]   Moor Closes   Y 6.8 16.8  52°58′59″N 0°32′31″W   /  52.983°N 0.542°W   / 52.983; -0.542   (Moor Closes )          SK980438   1968  WT , NCR ,  Map    [ 70]   Moor Farm   Y 47.0 116.1  53°09′25″N 0°10′30″W   /  53.157°N 0.175°W   / 53.157; -0.175   (Moor Farm )          TF221638   1981  WT    Map    [ 71]   Muckton Wood   Y 16.7 41.3  53°18′32″N 0°04′16″E   /  53.309°N 0.071°E   / 53.309; 0.071   (Muckton Wood )          TF381811   1953  WT    Map    [ 72]   Nettleton Chalk Pit   Y 8.1 20.0  53°28′05″N 0°18′25″W   /  53.468°N 0.307°W   / 53.468; -0.307   (Nettleton Chalk Pit )          TF125981   1968  GCR    Map    [ 73]   New England Valley   Y 6.3 15.7  53°14′31″N 0°00′04″E   /  53.242°N 0.001°E   / 53.242; 0.001   (New England Valley )          TF336735   1966  Map    [ 74]   Normanby Meadow   Y 4.2 10.3  53°23′28″N 0°27′32″W   /  53.391°N 0.459°W   / 53.391; -0.459   (Normanby Meadow )          TF026893   2002  Map    [ 75]   North Killingholme Haven Pits   Y 21.6 53.4  53°39′40″N 0°14′13″W   /  53.661°N 0.237°W   / 53.661; -0.237   (North Killingholme Haven Pits )          TA166197   1996  WT , SPA    Map    [ 76]   Porter's Lodge Meadows   Y 9.6 23.8  52°45′54″N 0°34′37″W   /  52.765°N 0.577°W   / 52.765; -0.577   (Porter'S Lodge Meadows )          SK961196   1988  Map    [ 77]   Potterhanworth Wood   Y 33.1 81.7  53°11′17″N 0°23′49″W   /  53.188°N 0.397°W   / 53.188; -0.397   (Potterhanworth Wood )          TF072668   1968 Forest nature reserve, NCR    Map    [ 78]   Red Hill   Y 3.0 7.5  53°18′29″N 0°06′14″W   /  53.308°N 0.104°W   / 53.308; -0.104   (Red Hill )          TF264807   1951  LNR , WT ,  Map    [ 79]   Robert's Field   Y 3.0 7.5  52°43′23″N 0°31′15″W   /  52.723°N 0.5208°W   / 52.723; -0.5208   (Robert's Field )          TF000150    LNR , WT ,  [ 80]   Risby Warren   Y Y 157.1 388.2  53°36′36″N 0°36′32″W   /  53.61°N 0.609°W   / 53.61; -0.609   (Risby Warren )          SE921135   1966  GCR , NCR ,  Map    [ 81]   Rush Furlong   Y 0.5 1.2  53°29′42″N 0°49′34″W   /  53.495°N 0.826°W   / 53.495; -0.826   (Rush Furlong )          SE780004   1985  WT    Map    [ 82]   Ryhall Pasture and Little Warren Verges   Y 6.2 15.4  52°42′43″N 0°29′42″W   /  52.712°N 0.495°W   / 52.712; -0.495   (Ryhall Pasture And Little Warren Verges )          TF018138   1983  Map    [ 83]   Saltfleetby-Theddlethorpe Dunes National Nature Reserve   Y 971.9 2,401.5  53°23′56″N 0°13′30″E   /  53.399°N 0.225°E   / 53.399; 0.225   (Saltfleetby - Theddlethorpe Dunes )          TF480914   1951  NNR , NCR , SAC    Map    [ 84]   Sapperton & Pickworth Woods   Y 28.1 69.3  52°53′42″N 0°28′19″W   /  52.895°N 0.472°W   / 52.895; -0.472   (Sapperton & Pickworth Woods )          TF029342   1968  Map    [ 85]   Scotton And Laughton Forest Ponds   Y 48.3 119.4  53°28′59″N 0°42′22″W   /  53.483°N 0.706°W   / 53.483; -0.706   (Scotton And Laughton Forest Ponds )          SK860992   1959  Map    [ 86]   Scotton Beck Fields   Y 16.8 41.4  53°28′44″N 0°40′55″W   /  53.479°N 0.682°W   / 53.479; -0.682   (Scotton Beck Fields )          SK876988   1987  Map    [ 87]   Scotton Common   Y 15.1 37.3  53°28′30″N 0°41′31″W   /  53.475°N 0.692°W   / 53.475; -0.692   (Scotton Common )          SK869984   1951  WT ,  Map    [ 88]   Sea Bank Clay Pits   Y 16.6 40.9  53°17′17″N 0°17′49″E   /  53.288°N 0.297°E   / 53.288; 0.297   (Sea Bank Clay Pits )          TF532792   1959  WT ,  Map    [ 89]   Silverines Meadows   Y 6.2 15.3  53°17′28″N 0°06′40″W   /  53.291°N 0.111°W   / 53.291; -0.111   (Silverines Meadows )          TF260788   1959  WT    Map    [ 90]   Skendleby Psalter Banks   Y 0.9 2.2  53°13′19″N 0°09′18″E   /  53.222°N 0.155°E   / 53.222; 0.155   (Skendleby Psalter Banks )          TF440716   1966  WT    Map    [ 91]   Sotby Meadows   Y 7.2 17.8  53°17′02″N 0°11′49″W   /  53.284°N 0.197°W   / 53.284; -0.197   (Sotby Meadows )          TF203779   1981  WT    Map    [ 92]   South Ferriby Chalk Pit   Y 85 209.9  53°40′01″N 0°29′10″W   /  53.667°N 0.486°W   / 53.667; -0.486   (South Ferriby Chalk Pit )          TA001200   1987  GCR    Map    [ 93]   Surfleet Lows   Y 3.4 8.5  52°50′24″N 0°08′38″W   /  52.84°N 0.144°W   / 52.84; -0.144   (Surfleet Lows )          TF251286   1968  WT    Map    [ 94]   Swaby Valley   Y 3.4 8.4  53°16′37″N 0°05′06″E   /  53.277°N 0.085°E   / 53.277; 0.085   (Swaby Valley )          TF391776   1966  WT    Map    [ 95]   Swallow Wold   Y 4.3 10.6  53°31′37″N 0°14′24″W   /  53.527°N 0.24°W   / 53.527; -0.24   (Swallow Wold )          TA168048   1966  Map    [ 96]   Swanholme Lakes   Y 53.1 131.3  53°12′18″N 0°35′24″W   /  53.205°N 0.59°W   / 53.205; -0.59   (Swanholme Lakes )          SK943685   1985  LNR , NCR    Map    [ 97]   Swinstead Valley   Y 8.9 22.0  52°47′N 0°31′W   /  52.79°N 0.51°W   / 52.79; -0.51   (Swinstead Valley )          TF006224   1989  Map    [ 98]   Tattershall Carrs   Y 26.6 65.7  53°06′47″N 0°11′06″W   /  53.113°N 0.185°W   / 53.113; -0.185   (Tattershall Carrs )          TF216589   1968  Map    [ 99]   Tattershall Old Gravel Pits   Y 14.5 35.9  53°07′08″N 0°12′47″W   /  53.119°N 0.213°W   / 53.119; -0.213   (Tattershall Old Gravel Pits )          TF197595   1951  Map    [ 100]   Tetford Wood   Y 5.4 13.3  53°15′47″N 0°00′25″W   /  53.263°N 0.007°W   / 53.263; -0.007   (Tetford Wood )          TF330758   1951  Map    [ 101]   Tetney Blow Wells   Y 14.7 36.4  53°29′10″N 0°00′43″W   /  53.486°N 0.012°W   / 53.486; -0.012   (Tetney Blow Wells )          TA320006   1968  WT    Map    [ 102]   The Hermitage   Y 4.4 10.9  52°49′37″N 0°30′14″W   /  52.827°N 0.504°W   / 52.827; -0.504   (The Hermitage )          TF009265   1968  SAM ,  Map    [ 103]   The Wash   Y 62,045.8 153,318.5  52°56′28″N 0°15′11″E   /  52.941°N 0.253°E   / 52.941; 0.253   (The Wash )          TF515405   1972  SPA , WT , NNR , NCR , Ramsar site , RSPB    Map    [ 104]   Thorne Crowle and Goole Moors   Y 1919 4742.1  53°37′59″N 0°54′04″W   /  53.633°N 0.901°W   / 53.633; -0.901   (Thorne Crowle and Goole Moors )          SE728157   1970  SPA , WT , NNR , NCR , Ramsar site , SAC    Map    [ 105]   Tortoiseshell Wood   Y 9.3 22.9  52°46′05″N 0°34′34″W   /  52.768°N 0.576°W   / 52.768; -0.576   (Tortoiseshell Wood )          SK962199   1987  WT , NCR    Map    [ 106]   Troy Wood   Y 91.1 225.1  53°06′43″N 0°08′17″W   /  53.112°N 0.138°W   / 53.112; -0.138   (Troy Wood )          TF247588   1951  Map    [ 107]   Tuetoes Hills   Y 12.5 30.8  53°30′11″N 0°43′44″W   /  53.503°N 0.729°W   / 53.503; -0.729   (Tuetoes Hills )          SE844014   1999  Map    [ 108]   Welton-le-wold Old Gravel Pits   Y 3.4 8.4  53°22′37″N 0°04′37″W   /  53.377°N 0.077°W   / 53.377; -0.077   (Welton-Le-Wold Old Gravel Pits )          TF280884   1986  GCR    Map    [ 109]   Wickenby Wood   Y 43.6 107.6  53°19′48″N 0°22′52″W   /  53.33°N 0.381°W   / 53.33; -0.381   (Wickenby Wood )          TF079827   1976 Forest nature reserve, NCR    Map    [ 110]   Willoughby Meadow   Y 0.5 1.3  53°13′01″N 0°12′11″E   /  53.217°N 0.203°E   / 53.217; 0.203   (Willoughby Meadow )          TF472712   1968  WT    Map    [ 111]   Willoughby Wood   Y 23.2 57.4  53°12′47″N 0°11′10″E   /  53.213°N 0.186°E   / 53.213; 0.186   (Willoughby Wood )          TF461707   1951  Map    [ 112]   Wilsford & Rauceby Warrens   Y 57.4 141.9  52°58′44″N 0°28′01″W   /  52.979°N 0.467°W   / 52.979; -0.467   (Wilsford & Rauceby Warrens )          TF030435   1968  WT    Map    [ 113]   Wilsford Heath Quarry   Y 16.2 40.0  52°57′36″N 0°32′02″W   /  52.96°N 0.534°W   / 52.96; -0.534   (Wilsford Heath Quarry )          SK986413   1968  Map    [ 114]   Winceby Rectory Pit   Y < 0.10.1  53°11′49″N 0°01′30″W   /  53.197°N 0.025°W   / 53.197; -0.025   (Winceby Rectory Pit )          TF320685   1987  GCR    Map    [ 115]   Withcall And South Willingham Tunnels   Y 3.8 9.4  53°19′41″N 0°10′48″W   /  53.328°N 0.18°W   / 53.328; -0.18   (Withcall And South Willingham Tunnels )          TF213828   2002  Map    [ 116]   Woodhall Spa Golf Course   Y 55.0 135.8  53°09′43″N 0°11′31″W   /  53.162°N 0.192°W   / 53.162; -0.192   (Woodhall Spa Golf Course )          TF210643   1969  Map    [ 117]   Woodnook Valley   Y 9.7 23.8  52°52′48″N 0°36′43″W   /  52.88°N 0.612°W   / 52.88; -0.612   (Woodnook Valley )          SK935323   1968  Map    [ 118]   Wrawby Moor   Y 18.5 45.6  53°35′06″N 0°26′38″W   /  53.585°N 0.444°W   / 53.585; -0.444   (Wrawby Moor )          TA031109   1966  Map    [ 119]