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

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

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

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

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

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

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

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

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

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