August 2017 - A set of pit limestone quarries in the Czech Karst, connected by underground tunnels. Among the most famous are Great America, Little America and Mexico, several other larger and smaller quarries are located in the surrounding forests. - Great America (also known as the Eastern Quarry or the East Quarry) is a limestone quarry on the territory of the village of Mořina in the district of Beroun in the Czech Republic in the Protected Landscape Area of Český kras. It is the largest of the group of local quarries. The size of the quarry is about 750 × 150 meters. The depth of the quarry is between 67 and 80 m. The bottom is at an altitude of 322 m (6th mining floor), with no other fracture in the group reaching this floor. Up to an altitude of 335 m (5th mining floor, west half of the bottom of the quarry), the quarry is flooded with a free-flowing lake. The quarry forms an impressive canyon and is a popular tourist destination. There were recorded Czech films, such as The Journey to the Southwest (1989), Limonádový Joe, Little Mermaid, Micimutr and others. - Mexico (also known as Trestanecky Quarry, Rainy Quarry, Schnuloušák Quarry). The length of the quarry is about 300 meters, the width is 100 meters and the depth is 80 meters. The bottom of the quarry is flooded and the people's names are based on the fact that the sun never shines on it.