I wasn’t aware of this cave or of Chuckawalla Bill. I will see if I can determine where it is. It looks interesting. Black Canyon is where Hoover Dam is and this sounds like it is south of the dam. Good thing, as that means I won’t be needing scuba gear.
I saw the same add for the tour that Jbee mentions and I won’t be paying $500 to hike to a canyon in my own backyard, so to speak. It will require some detective work. Naturally the tour guide didn’t provide many details.
Just north of the Grand Canyon is Zion National Park. Just north of Zion in the Dixie National Forest is Brian Head ski resort. Brian Head Peak is at 11,300 ft. From there with a little planning you can hike south along side Cedar Breaks, through Kolob Canyon and Zion, then to the Vermillion Cliffs on to the Kaibab Plateau at the North Rim. From there at an elev. of 8,200 ft. you could then hike down to the Colorado River at about 2,250 ft.
The peak at Brian Head is dated to approximately 41 mya while the oldest parts of the base of the canyon can go back to about 2 bya. I’ve been up at Brain Head, Cedar Breaks, Navajo Lake, the West Rim of Zion, the Virgin River where it comes through the Narrows and at the North Rim. I’ve been to the South Rim but haven’t made it to the floor of the canyon yet. From Brian Head to the North Rim is about 110 miles and you can see geology all along that route spanning 1.9 billion years. A unique place in the world where you can see a geologic span that long.
The geology and ecology of the area is amazing. From alpine regions to deserts. I never get tired of hiking and camping in it.
Duane