Preobragenskaya Fortres, Russian fortress in Nizhneye Inkhelo, Dagestan.

Preobragenskaya Fortress is a stone fortification in Nizhneye Inkhelo built with defensive walls and military structures connected together. The complex was designed to control access through the mountainous landscape and housed troops throughout the year.

Founded in 1859 by Field Marshal A. I. Baryatinsky, the fortress blocked the only road through the Andiyskoye Koisu valley. Harsh climate and a malaria epidemic forced its relocation downstream to a newly built iron bridge. In 1912 a company of the 207th Novo-Bayazet Regiment was stationed there, and the fort was abandoned after the 1917 revolution.

The fortress's name, Preobrazhenskaya, refers to the Transfiguration of Christ, a common dedication in Russian military fortifications. After the 1917 revolution the site housed a road control office and later a militia post before being abandoned. Local residents then dismantled stones from the walls for building material, a practice that shaped the ruins visible today.

The fortress stands in the village of Botlikh, on the Andiyskoye Koisu River. The original site was abandoned after a malaria epidemic and the garrison moved downstream to a new iron bridge. The stone walls have partly collapsed and locals removed stones for building, so the terrain is uneven. Plans for reconstruction are discussed but no work has started.

After the 1917 revolution the fort first housed road-control staff, then a militia post, before being abandoned for good. Locals then dismantled its walls stone by stone for building material, which is why the masonry is so reduced today.