Today, the park offers recreational activities as mountain biking, horseback-riding, hiking, as well as campgrounds, picnic areas, and sixteen RV camp hook ups.

Geologists believe that during the Miocene Epoch 7-5 million years ago, the Pacific Ocean extended far inland and covered much of the Simi Valley, leaving only tips of various mountains visible.

[12] Historians believe the Roman Catholic Father Vincent de Santa Maria of the San Buenaventura Mission described Tapo Canyon in his letter dated September 3, 1795: "After examining everything, we found the water to be not abundant, the valley very narrow and dismal, the soil salinous, and consequently unserviceable.

"[16] During the 1850s, wine-maker Don José De La Guerra started wine-grape harvesting and made wine in his Tapo Canyon vineyards.

The first well opened with a production of as much as 300 barrels of oil per day, and a pipeline was shortly built down to the Southern Pacific depot where the storage tanks were situated.

Its physical geography is dominated by rolling hills, lined with shrubs and bushes, numerous canyons, oak trees, and vegetated creek-beds and creeks.