I-10 west to Avra Valley Road. go west approximately 8 miles. You will pass Clayton Rd. 1.8 miles after Clayton Rd is El Paso Gas Rd. Turn left onto El Paso Gas Rd. (There is an equipment yard on the left and a row of mail boxes on the right, if you come to Trico Rd, you’ve gone to far). After about .08 of a mile turn left across a cattle guard. Follow DSEC signs. The road turns left, then right (only way you can go). You will see DSEC on the left, pass the main gate and proceed to second entrance to park.