A) In the Sinai Peninsula
B) In the Sahara Desert
C) On the Galala Plateau, Egypt
D) Near the Nile Delta

A) Glacier-formed cave
B) Volcanic cave system
C) Cavern formed by river erosion
D) Karst-based subterranean environment

A) Permian era
B) Cretaceous era
C) Eocene era
D) Jurassic era

A) 50 miles north-northeast
B) 100 miles west
C) 71 miles (115 km) south-southeast
D) 30 miles east

A) By a group of explorers hiking in the area
B) After quarry blasting created an entrance
C) Through satellite imaging
D) During an archaeological dig

A) 2,300 ft (700 m)
B) 3,000 ft (914 m)
C) 4,000 ft (1,219 m)
D) 1,500 ft (460 m)

A) 30 ft (9 m)
B) 50 ft (20 m)
C) 70 ft (21 m)
D) 100 ft (30 m)

A) Granite
B) Alabaster
C) Marble
D) Sandstone

A) Ice formations
B) Fossilized remains of dinosaurs
C) Geysers and hot springs
D) Stalactites and stalagmites

A) 2000
B) 1992
C) 1985
D) 2010