There is no maintained trail to this very unique cave/arch however, it is fairly easy to find as you can see the top of the cave from Goblin Valley Road. After turning onto Goblin Valley road from Temple Mt. Road, look to the right and high on the white sandstone formation you can see a dark depression. This is the cave. Drive .3 miles on Goblin Valley road an there will be a dirt road suitable for two wheel drive vehicles. Park near the end where you can see Temple Wash below.
There is no trail marker but you will see an obvious trail that drops into the wash. Cross the wash and follow the trail onto the white slick rock. Here you will need to follow cairns that are irradically placed with several different routes that can be followed. They all lead to the same place. Continue uphill until you see a vegetated depression. Drop into that and it will lead directly to the cave.
The cave is large and can have a few people. In the cave on the right are some very nice petroglyphs and of course the big hole in the ceiling of the cave. When I was there people were rappelling thru the hole and left their rope hanging so appears in all my pictures. Return the way you came for a nice short adventure.