e/Victoria Island structure

Information
has gloss	eng: The Victoria Island structure is a 5.5 km bowl-shaped structure buried in the shale sediments of the Sacramento-San Joaquin River Delta, west of Stockton, California. The circular structure is part of a former sea bed, and lies 1,490–1,600 metres (4,890–4,250 ft) below sea level.
lexicalization	eng: Victoria Island structure
instance of	(noun) a bowl-shaped depression formed by the impact of a meteorite or bomb crater

Media
geo loc	geographic location 37.8899253 -121.5346722