Hollister is kind of like Disneyland, except it's for 4x4s. Very organized and all trails are rated and clearly marked. It has everything from graded fire-roads to nasty modified jeep swallowing trails so you can make it as hard or easy as you like. We will be doing a veriety or trails but nothing too hard-core. I mostly like to go see jeeps get stuck in the mud pits .

more info on Hollister here

BTW, it's a great place to learn how to 4x4 your truck in a controled environment.