Anina (Romanian pronunciation: ['anina];[3] German: Steierdorf; Hungarian: Stájerlakanina) is a town in the Banat region of Romania, in Caraș-Severin County, with a population of 5,521 in 2021.

Anina represents one of the most important localities in the Southern Carpathians for Jurassic fossils, both plants and animals, as the geological heritage here is particularly diverse and well preserved (Popa, 2001, 2005).

Anina is a fossil-Lagerstatte for Early Jurassic biota, the Hettangian-Sinemurian terrestrial Steierdorf Formation recording an extremely rich floral association, vertebrate and invertebrate tracks, traces and burrows.

Very rare vertebrate tunnels were recently described (Popa and Kedzior, 2006), such burrows being formerly reported only from three occurrences in the world (South Africa, Arizona and Argentina), tetrapod tracks such as Batrachopus cf.

The railway preserves many aspects of the original design and, as such, it does not comply with many UIC standards and it needs special, more powerful locomotives and shorter rail coaches to operate.