This is a large dirt parking lot east of the Vallero gas station run by the casino. It is FREE. There are large ruts from rain. Walk the lot to see the best access to the spot you want. There are no services but there is an RV park (Road Runner) up the road with water and dump for $10. It is very uneven in most spots but it is FREE! We stayed 4 nights in a 37 ft. 5th wheel and felt safe. The casino is small but they have good deals for signing up for their club.