Slope, San Nicolas Island

From Islapedia

Slope, San Nicolas Island is a triangulation station established by William E. Greenwell of the U.S. Coast Survey in 1858. It is located in the central portion of the mesa just east of Shannon Road. As Greenwell described it: “The soil at this station is loose and sandy and the ground thickly covered by a sort of succulent plant, called in these parts ‘soldier tree.’”