The Țarcu Mountains are a mountain range in southwestern Romania, at the western edge of the Southern Carpathians. They are located between the Bistra Valley (to the south), Timiș River (to the east), Godeanu Mountains (to the northwest) and Râul Mare Valley (to the west), with the Râul Mare Valley serving as their natural border with the Retezat Mountains. They were declared a Natura 2000 protected area in 2007 due to their unique biodiversity. Together with the Retezat, Godeanu and Cerna mountains, they constitute the only intact forest landscape in Europe outside of Russia and Scandinavia.
Most rocks in the range are crystalline, with few areas with sedimentary rock. As such, the mountains are massifs, cut by narrow valleys. Limestone is found only in a few places. Erosion has formed several very prominent platforms, such as the Borăscu platform. Glaciers were present during the ice ages, leaving glacial calderas and small glacial lakes, such as the Bistra Lake.
Because of the Western climatic influences, the amount of rainfall in the Țarcu Mountains is quite high. Snow may fall at altitudes above 1500 metres at any time in the year, while the snowpack usually lasts from October or November until June or even July in the glacial calderas of the highest peaks.
Caraș-Severin is a county (județ) of Romania on the border with Serbia. The majority of its territory lies within the historical region of Banat, with a few northeastern villages considered part of Transylvania. The county seat is Reșița. The Caraș-Severin county is part of the Danube–Criș–Mureș–Tisa Euroregion.

Oțelu Roșu is a town in northeastern Caraș-Severin County, Romania, in the Bistra Valley. It is situated on the national road 68, between Caransebeș and Hațeg. The town administers two villages, Cireșa (Bisztracseres) and Mal (Mál). It is situated in the historical region of Banat.
The Retezat National Park is a protected area located in the Retezat Mountains in Hunedoara county, Romania. Founded in 1935, it is the oldest national park in the country and categorized as a category II IUCN national park.
The Southern Carpathians are a group of mountain ranges located in southern Romania. They cover the part of the Carpathian Mountains located between the Prahova River in the east and the Timiș and Cerna Rivers in the west. To the south they are bounded by the Balkan mountain range in eastern Serbia.
The Făgăraș Mountains are the highest mountains of the Southern Carpathians, in Romania.
Moldoveanu Peak, at 2,545 metres (8,350 ft), is the highest mountain peak in Romania. It is located in Argeș County, in the Făgăraș Mountains of the Southern Carpathians.
Divisions of the Carpathians are a categorization of the Carpathian mountains system.

The Retezat Mountains are one of the highest massifs in Romania, being part of the Southern Carpathians. The highest peak is Peleaga, at an altitude of 2,509 metres (8,232 ft). Other important peaks are Păpușa and Retezat Peak. The name means "cut off" in Romanian.
The Retezat–Godeanu mountain group is a subgroup of mountains in the Southern Carpathians, Romania. It is named after the highest mountains in the group, the Retezat Mountains.
Peleaga is a mountain in Romania. It is the highest point in the Retezat Mountains with a summit elevation of 2,509 metres above sea level. Peleaga is located in Hunedoara County, and lies within the historical region of Transylvania in central Romania.
Parângu Mare is a mountain peak in Romania. At 2,519 m (8,264 ft) above sea level, it is the highest peak of the Parâng Mountains, located in the Parâng Mountains group of the Southern Carpathians. It straddles the border of the Romanian counties of Gorj and Hunedoara. It is the most prominent peak in Romania, its parent mountain being Gerlachovský štít ( in Slovakia.
Romania's landscape is almost evenly divided among mountains, hills, and plains. These varied relief forms spread rather symmetrically from the Carpathian Mountains, which reach elevations of more than 2,400 metres, to the Danube Delta, which is just a few metres above sea level.
The Bistra is a river in south-western Romania, in the Banat. It is a right tributary of the river Timiș. Its valley delimits the Țarcu Mountains to the south from the Poiana Ruscă mountains to the north. Its name is derived from a Slavic word meaning "fast-flowing".
Păpușa, standing at 2,508 metres, is a mountain peak within the Retezat Mountains of the Southern Carpathians in Romania. It is the second highest peak within the Retezat Mountains, behind Peleaga.
The Râul Mare is a left tributary of the river Strei in Romania. It discharges into the Strei in Subcetate. Its source is in the Retezat Mountains. It flows through the reservoirs Gura Apelor, Ostrovul Mic, Păclișa and Hațeg. Its length is 64 km (40 mi) and its basin size is 915 km2 (353 sq mi).
The Romanian Carpathians are a section of the Carpathian Mountains, within the borders of modern Romania. The Carpathians are a "subsystem" of the Alps-Himalaya System and are further divided into "provinces" and "subprovinces".
Vârful Păpuşa is a 2,135-metre (7,005 ft) mountain in the Parâng Mountains of Romania, part of the Parâng Mountains group.
The Vâlcan Mountains are a chain of mountains in the Southern Carpathians in Gorj County, Romania. They are part of the Retezat-Godeanu Mountains group, and run for approximately 54 kilometres (34 mi). The highest point is Oslea Peak at 1,946 metres (6,385 ft), and the second highest is Straja at 1,848 metres (6,063 ft). The mountains run the length of the Jiu Valley, and serve as a barrier to entry on the southern side of the valley.
The Șureanu Mountains, belong to Romania's Parâng range in the Southern Carpathians, with peaks frequently exceeding 2,000 metres (6,600 ft).
The Domogled-Valea Cernei National Park is a protected area situated in Romania, on the administrative territory of counties Caraș-Severin, Gorj, and Mehedinți.