dated back as far as 165 million years. The average rate of erosion of a hoodoo is approximately 2–4 feet (0.6-1.3 m) every 100 years. The two leaders, Glenn Taylor and David Hall, were subsequently dismissed from their leadership roles by the Utah National Parks Council, which is a local council of the Boy Scouts in Utah. The national Boy Scouts then removed the men from the scouting organization altogether. In January 2014, two of the menthe one who toppled the hoodoo and the cameramanwere arraigned on felony charges of "criminal mischief" and "intentionally damaging, defacing and destroying property." The two men pleaded guilty to lesser charges of criminal mischief and attempted criminal mischief, and received a sentence of one year probation plus fines and case-related fees. Flora and fauna The flora of Goblin Valley include Mormon tea, Russian thistle, Indian ricegrass, and various cacti, as well as junipers and pinyon pines at higher elevations. Fauna include jackrabbits, scorpions, kangaroo rats, pronghorns, kit foxes, midget faded rattlesnakes, and coyotes. Geology The unusual stone shapes in Goblin Valley result from the weathering of Entrada sandstone. The Entrada consists of debris eroded from former highlands and redeposited on a former tidal flat of alternating layers of sandstone, siltstone, and shale. The rocks show evidence of being near the margins of an ancient sea with the ebb and flow of tides, tidal channels that directed currents back to the sea and coastal sand dunes. Joint or fracture patterns within the Entrada sandstone beds created initial zones of weakness. The unweathered joints intersected to form sharp edges and corners with greater surface-area-to-volume ratios than the faces. As a result, the edges and corners weathered more quickly, producing the spherical-shaped 'goblins'. The Entrada sandstone from which the hoodoos developed was deposited in the Jurassic period around 170 million years ago. Climate Average daytime highs in the summer average between , though the low humidity, high elevation, and sparse vegetation allow evenings to cool off rapidly to about . Also, the intermittent summer monsoon arriving from the south can bring intense and localized thunderstorms. The rugged terrain and intense rainfall can lead to devastating flash floods, while the low humidity combined with gusty winds and frequent lightning can spark wildfires. Winters have colder temperatures and occasional snow, with temperatures above freezing most days, but often dropping as low as at night. The average precipitation is less