If this is the one near Cha Canyon, some people know it as Pinnacle Rock...I think this is the one in the San Juan…what’s it called?View attachment 34833
That’s the one. I have a million photos of it but can’t find my own right now.I think this is the one in the San Juan…what’s it called?View attachment 34833
I sure hope it NEVER reappears!Here are two photos that provide a good tape measure showing the early rise of Lake Powell in 1963. The first shot was taken in 1871, and shows Sentinel Rock at the mouth of Wahweap Creek. The rock is about 300 feet tall. The second shot is from the spring of 1963, and appears on the cover of the July 1963 issue of Desert Magazine. You can see that the lake has climbed about 2/3 the way up the rock, which makes the lake about 200 feet deep at that point. That puts the date of the photo at the very end of May or early June 1963. The top of the rock disappeared completely in the summer of 1964. When the lake is full, the top is 250 feet underwater. Today, it's still about 80 feet underwater....
View attachment 34829View attachment 34830
I am remembering the same. Cobra Rock? I know someone referred to it as that so that’s what I’ve always called it as well.Wayne has a name for it but I can’t remember what he called it?
Where is that? That's not the old dinosaur rock going up past Padre bay?
That is the same formation that Rivergoer showed at the start of the thread. It's the monolith in the San Juan known by many as Pinnacle Rock.Where is that? That's not the old dinosaur rock going up past Padre bay?![]()
And it's changing microscopically every moment of every day!In the 70's & 80's i Looked at it and other Lake Powell er...... rock formations......... as 'that's kinda cute/fun'.....but now......to think what it took....over eons.......so may lifetimes..... for it to be what is is.........
Mucho WOW.....![]()
Well I've got two interesting old photos of the Bullfrog area that might help. First, there's this one from June 1965, when the lake was at 3491:John, do you know of any photos of the old road grade at or below current water levels at the Bullfrog main ramp area (the road that went down to the ferry) ? Sq

