Santa Cruz Island is located off the southwestern coast of Ventura, California, United States. It is the largest island in California and largest of the eight islands in the Channel Islands archipelago and Channel Islands National Park. Forming part of the northern group of the Channel Islands, Santa Cruz is 22 miles long and 2 to 6 miles wide with an area of 61,764.6 acres.
The island's coastline has steep cliffs, large sea caves, coves, and sandy beaches. The highest point is Devils Peak, at over 2,450 feet. A central valley splits the island along the Santa Cruz Island Fault, with volcanic rock on the north and older sedimentary rock on the south.
Wikipedia https://en.wikipedia.org/wiki/Santa_Cruz_Island
Coordinates 34°0'49.831" N -119°44'44.226" E