This is Grosvenor Arch, just south of Kodachrome Basin State Park in Utah. Back in the day, when this area wasn't so well known, you could camp out right beneath the arch and watch the stars all night. Good times.
There is an issue with Uploading Photos (attachjments). I am not sure what the problem is, and I am looking into it. You can still try to Create your Threads and Upload your Photos, but it is hanging up during the Upload.