The Little Basin Campground is for group camping for four (4) or more people only. LITTLE BASIN, once a retreat and campground for Hewlett Packard employees, is a 534-acre California State Park campground that was recently added to Big Basin Redwoods State Park through a collaborative endeavor with Peninsula Open Space Trust (POST) and the Sempervirens Fund. Through an innovative approach to park operations and a public/private partnership, Little Basin is managed by Basecamp Hospitality, a recreation and hospitality company that works with California State Parks.