Mount Ellen, at the northern end of the Henry Mountains, rises prominently to the south of Goblin Valley State Park. Admire fanciful hoodoos, mushroom shapes, and rock pinnacles in Goblin Valley State Park, in Emery County between the towns of Green River and Hanksville, in central Utah, USA. The Goblin rocks eroded from Entrada Sandstone, which is comprised of alternating layers of sandstone (cross-bedded by former tides), siltstone, and shale debris which were eroded from former highlands and redeposited in beds on a former tidal flat.
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