USBGN researcher Cheryl Cook believes this name is derived from a Temecula (Luiseño) Indian word Japa which Hanna described as meaning "prickly peat". Charles Hart in his Village Names of Twelve California Mission Records, notes a Diegueño Indian rancheria named Japacha listed in the records of Mission San Diego (n.d.).
Delisted from HPS Peak List because it was described as a "dinky little bump on the side of Cuyarnaca" and because the "point was below the summit" (1960).
Name first appears on USFS Cleveland National Forest map (1954).