Grapevine Peak may have been constructed for the Kern County Fire Department prior to 1940. The site does not appear on Thornton's 1986 survey but is noted as a county structure on Ron Kemnow's site.
The structure appears to be a 14x14 cabin similar to a US Forest Service L-4 design on a 30 foot open timber tower.
The removal date is unknown. Grapevine Peak remains a busy communications site.