The trail was good and long and for the most part easy to navigate...well, at least the first 6 miles or so before you get to the actual skull mesa trail. there weren't too many people, which was kind of nice. you cross a river 5 times before you get to the path junction to determine which way you want to go. then it's a couple of miles and you will pass through a gate, that's where the skull mesa trail starts. that trail is terribly marked. if it wasn't for the cairn stones (man-made rock piles), i would have had no clue where i was going. when you get to the top of the mesa, it is a gorgeous view! totally worth it! but make sure to go back the same way you came, i couldn't find a path off the opposite side of the trail. and make sure you plan on making a day trip out of this hike! i was moving pretty fast, but almost 18 miles takes more than a few hours!
This is the hardest hike I've done so far other than R2R of GC ! it is a must do ! The most scenic by far very very rocky and steep towards the very top! but the views are worth it. We ran out of water and daylight! we got to Skull Mesa 4290 elevation at 2pm and it took us 4 hours nonstop to get this far starting at Spur Cross Trailhead at !0 am so we did not have time to explore or find the ruins . Gives me a good reason to do it again! Saw the most gorgeous crested saguaro !