The Great Sphinx of Giza is a statue of a reclining lion with a human head that stands on the Giza Plateau on the west bank of the Nile, near modern-day Cairo, in Egypt. It is the largest monolith statue in the world, standing 73.5 m (241 ft) long, 6 m (20 ft) wide, and 20 m (65 ft) high. It is the oldest known monumental sculpture, and is commonly believed to have been built by ancient Egyptians in the third millennium BC. After the Giza Necropolis was abandoned, the Sphinx became buried up to its shoulders in sand. The first documented attempt at an excavation dates to c. 1400 BC. In 1817 AD, the first modern archaeological dig, supervised by the Italian Captain Giovanni Battista Caviglia, uncovered the Sphinx’s chest completely. The entire Sphinx was finally excavated in 1925.