A quarry adit at Bohemian Karst
Many quarries of Bohemian Karst had some underground part. These should have been prospecting galleries, haulage drifts, cross drifts to limestone deposits or explosives depots. Many quarries have lost their undergorund, or it was reduced to tiny remains as the quarry's pit advanced. This belonging to an abandoned and forgotten quarry somewhere at Bohemian Karst probably had many roles. At first, it began as a prospecting one, opened the quarry and then was used to transport limestone. Later, the quarry was abandoned, grown over and disappeared form many maps. Parts of it's underground were filled by clay flown in from caverns, bats inhabited rock crevices and sometimes even an suprised hiker visited this place.