Colorado Porch

Outdoors and wildfire - Western Slope

Rabbit Valley: real dinosaur bones you can visit, but not collect

Off I-70 near the Utah line, the Trail Through Time and Mygatt-Moore Quarry let you see Jurassic dinosaur fossils in place on BLM land, where collecting vertebrate fossils is prohibited.

Published June 10, 2026 - Last verified June 11, 2026

Out at the far western edge of Mesa County, where I-70 nears the Utah line, the ground holds real Jurassic dinosaur bones. You can walk up and look at them.

The Rabbit Valley Trail Through Time is a short loop that starts at the Mygatt-Moore Quarry, where crews have dug out bones from sauropods, armored dinosaurs, and predators. Interpretive signs point out fossils left in place in the rock. It is reached from I-70 Exit 2 and sits on land managed by the BLM Grand Junction Field Office.

Here is the key rule: the fossils are protected. You can look and take photos, but removing, casting, or defacing vertebrate fossils is against the law. That holds true across BLM land in the area, not just at the marked trail. Pocketing a “cool rock” with a bone in it can be a serious mistake.

The trail runs through open high desert with little shade, so summer visits call for water, sun cover, and an early start.

For directions, hours, and the rules on fossils, check the BLM’s official Rabbit Valley page before you go.

Keep reading

Related Porch Notes

More notes from Mesa County and nearby topics.

Outdoors and wildfire

McInnis Canyons and Black Ridge: BLM land with its own rules

The red-rock canyons west of Grand Junction are a BLM National Conservation Area, and the Black Ridge Canyons Wilderness inside it limits land travel to foot and horseback.

Read note ->

Outdoors and wildfire

Wild horses live in the Little Book Cliffs, northeast of Grand Junction

The Little Book Cliffs Wild Horse Range is BLM land a few miles from Grand Junction where free-roaming wild horses share canyon country with elk, deer, and bears.

Read note ->

Outdoors and wildfire

The North Fruita Desert (18 Road) is a BLM mountain-bike area with a real campground

North of Fruita, the BLM's 18 Road trail system draws mountain bikers, and its campground is a designated, fee site rather than free camp-anywhere land.

Read note ->

Outdoors and wildfire

Colorado National Monument is a national park unit, not a state park

The red-rock monument outside Grand Junction is run by the National Park Service, so its fees, camping, and rules differ from Colorado's state parks.

Read note ->

Outdoors and wildfire

The Grand Mesa holds hundreds of lakes for fishing and camping

The forested top of the Grand Mesa is dotted with lakes and reservoirs with national-forest campgrounds, where Colorado Parks and Wildlife sets the fishing rules and the Forest Service runs the campsites.

Read note ->

Outdoors and wildfire

The Grand Mesa is its own avalanche forecast zone in winter

The Colorado Avalanche Information Center forecasts the Grand Mesa as its own backcountry zone, so winter snowmobilers and skiers should check it before heading up.

Read note ->

Sources and review

Where this information comes from

This note uses official or primary sources where practical. Local details can change, so confirm before acting.

Last reviewed
June 11, 2026