Czech Grand Canyon - is a limestone flooded quarry. At its bottom there are two interconnected lakes with clear water, which attract swimming especially in summer. Officially, however, it is forbidden to enter the quarry. You can safely view the quarry from the viewpoint right next to the car park or from the paths leading around the Great America. There are other quarries within walking distance - e.g. Mexico, Canada, Little America. It is located in close proximity to the road leading from Mořina (direction from Karlštejn) to Kozolupy (direction Loděnice - Prague).
