// The Marble Gorge camp is situated on one of the side slopes at a height of 1,800-2150 metres above sea level, around 30 kilometres from Chara. The journey took us four days by foot thanks to heavily overflowing rivers. In this location, you can find the remarkably preserved remains of the “Marble Key” (Mramorny Klyuch) camp, which is where the actual extraction of uranium took place. We spent several days in the Marble Gorge documenting the remnants of the camp in detail as well as the mining itself. This was primarily done with the aid of panoramic photographs, photogrammetry, and other forms of surveying. Besides making a detailed description, our goal was also to make a 3D model of the camp and founded items.

gulag.online/articles/the-marble-gorge-d...