The Ochil Hills (; Scottish Gaelic: Monadh Ochail is a range of hills in Scotland north of the Forth valley bordered by the towns of Stirling, Alloa, Kinross, Auchterarder and Perth. The only major roads crossing the hills pass through Glen Devon/Glen Eagles and Glenfarg, the latter now largely replaced except for local traffic by the M90 Edinburgh-Perth motorway cutting through the eastern foothills. The hills are part of a Devonian lava extrusion whose appearance today is largely due to the Ochil Fault which results in the southern face of the hills forming an escarpment. The plateau is undulating with no prominent peak, the highest point being Ben Cleuch at 721 m. The south-flowing burns have cut deep ravines including Dollar Glen, Silver Glen and Alva Glen, often only passable with the aid of wooden walkways.
The River Irvine is a river that flows through southwest Scotland. Its watershed is on the Lanarkshire border of Ayrshire at an altitude of 810 feet (250 m) above sea-level, near Loudoun Hill, Drumclog, and 7 miles SW by W of Strathaven. It flows 29+1⁄2 mi (47.5 km) westward, dividing the old district of Cunninghame from that of Kyle, until it reaches the sea via Irvine Harbour in the form of the Firth of Clyde, and flows into Irvine Bay by the town of Irvine. It has many tributaries, some of which form parish, district and other boundaries.
