One hundred and Seventy (170,000,000) million years ago, a vast inland sea covered what is now South-central Utah. Over time large deposits were laid down along the margins of that body of water. Eventually, those Jurassic deposits were exposed and weathered; one of them, the extensive Entrada, eroding to create the fabulously sculpted hoodoos of Goblin Valley. Overlaying the Entrada are three other great deposits: the Curtis, the Summerville, and upmost of all the Morrison. Where the Morrison has shown itself to be more erosion resistant, it has become the caprock for the great buttes of the Lower San Rafael Swell, Wild Horse Butte being a singular example. Wild Horse Butte looms over the nascent goblins of Entrada like a silent sentinel keeping an eye on all of its children.

A focal length of 112mm gave me the somewhat narrow angle-of-view I wanted and a bit of magnification, as well. An aperture of f/22 provided depth-of-field, and a shutter speed of 1/6th second at ISO 100 gave me an overall medium exposure in the waning afternoon light.

The great geologic displays for which Utah is so well known are on full display in the Lower San Rafael; and while the beauty of Goblin Valley seems safe from development, the lands that surround it are known to be flush with ores coveted by the extractive industries. The Bureau of Land Management oversees these wonderful landscapes for us, and our voices should be heard and heeded above any corporate interest when the fate of these lands is on the line.