The Jones Hole Trail is located in the northern section of Dinosaur National Monument (DNM) on the Utah side - DNM also stretches across to Colorado. This area and trailhead (TH) is home to the Jones Hole National Fish Hatchery, where rainbow trout, brown trout, and brook trout are raised to stock areas in Utah, Wyoming, and Colorado. The Jones Hole Creek runs alongside the hatchery, and eventually flows into the Green River, where the trail ends. The trail itself is very mellow, gradually descending as it reaches the confluence. Take a short side trip to Ely Falls and the pictographs, before continuing down stream. Big Horn sheep are often spotted in this canyon.
Dinosaur National Monument (DNM) is located in both Utah and Colorado - the Utah side is just outside of Vernal, Utah and offers a large dinosaur quarry, trails, camping, and amazing scenery of the Uintah Basin and Green River. Petroglyphs hint at earlier cultures (mainly the Fremont), and later homesteaders and outlaws found refuge here. Of course the name of the game here are the dinosaur fossils. Visitors can see over 1,500 dinosaur fossils exposed on the cliff face, located inside the Quarry Exhibit Hall. It's one of the most amazing sites for Paleontologists and explorers-alike. Plan to spend at least one full day at DNM.
Fantasy Canyon is about an hour south of Vernal, Utah and is a small, but unique area consisting of grayish-brown sandstone. Most of the main erosion direction is horizontal and resembles irregular stacked planks, bones, or thin pinnacles. Keep in mind that these formations are extremely fragile - don't break off pieces or take them home. Most of the formations occur on the north side of the mesa, centered along a narrow ravine only 200 ft long and up to 20 feet deep. Exploring this area is really interesting and fun, but it is really small. Plan on combining visiting Fantasy Canyon with other hikes in the Vernal area to make it a worthwhile trip, If you plan on only coming out here to see Fantasy Canyon, you may be disappointed.