Don Glut wrote:
No mine, just a lot of private land, including hills, a valley, rocks, trees, a little stream, etc. It bordered the Devil's Punchbowl, with no (at least visible to us) fences or other obstructions separating the DP and this private land. He had a house on the property, so this immense expanse of "Dinosaur Valley" was essentially the guy's backyard.
Speaking of backyards, any reason the Xenomorphs were never filmed from behind ? Would that have been X rated ?
  

"You can't smell any reefer, can you"?