Description: English: Mammillaria tetrancistra in Anza-Borrego Desert State Park (Mine wash). Date: 5 April 2013, 12:09:05. Source: Own work. Author: Adbar. Camera location33° 07′ 36.48″ N, 116° 20′ 00.96″ WView all coordinates using: OpenStreetMap 33.126800; -116.333600. : The geographical information in this file was retrospectively estimated.The location may therefore be somewhat imprecise.Verifying and refining these coordinates is strongly encouraged.