Mountain glacial valley between Pec pod Sněžkou and foothills of mountain Sněžka. It is cramped by Široký ridge and Studniční mountain. Three glacial moraine was conserved there. The river Úpa run through the valley. Rare high-mountain plants growth in several parts of valley. In the past the ore was mined there, but the mining finished in the beginning of 20th century. Many recreation objests are situate in the Obří důl. Many slopes of the valley are typical avalanchelike and several very destructive avalanches slumped there in the past.