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Onyx Cave is a 2.1 mile loop trail located near Eagle Rock, Missouri and is rated as moderate. The trail is primarily used for hiking and horses and is accessible year-round. Dogs and horses are also able to use this trail.

Distance: 2.1 miles Elevation Gain: 390 feet Route Type: Loop

dog friendly


horseback riding

Trail leads down hill to a opening in the Earth in several places. This leads down the canyon to the several caves and caverns that are prolific to the limestone ledges in the area.The trail gets a little tough in the bottom but easily overcome the last part back up the hill to the road is a little tough. You will see various Limestone ledges with many little caches. You wonder why the Outlaws and Ancient people liked it so well,just look around. The wonders abound.

off trail
1 month ago

We did about 75% of the trail last weekend. As others have said there are no trail markings, it is not maintained, and people have been cutting off what used to be the trail to make a shorter hike to the caves. The caves seem to be somewhat of a network of natural air shafts and then the main opening, so you can find various openings around the hillside. If you’ve found your way to the larger cliff face with the main opening the trail basically follows the creek down the ravine, turns right at the intersection of the first wash then follows the main creek bed until just before a barbed wire fence crosses the creek. At approximately the barbed wire fence the trail would go up the hill to the right of the creek (facing downstream) however, it is not clearly marked or easily ascertainable and it crosses two ridges before putting you out on the road with the parking area at which point you have to walk back to your car along the road to finish the loop. Instead of going up that hill we just made it an out and back along the creek which was nice since it had recently rained.

8 months ago

first off there are tail markings for the trailhead.if you find your bearings then your off track even tried to use GPS no go if anyone knows how to navigate this .good luck.....

Thu Feb 01 2018

love this app and trail !!

Sat Sep 30 2017

Nice views from parking area of The mountains. Cool cave! trail is not well marked after you leave the cave area.

Tue Mar 15 2016

The trail lead to private land so we turned around and headed back. Maybe we took a wrong turn somewhere.

Sun Mar 08 2015

As the map showed that the trail was 2 miles long, I was expecting at least a trail. Yes, there is a nice trail to the cave, but to say there is an actual path to follow is completely wrong. After the cave, I roughly followed the line on my trail map. The best recommendation for this alleged trail is to take Daryl Dixon and a pair of hedge trimmers to cut through the wild roses.

Sat Oct 04 2014

Good place to stretch your legs if your driving sugar camp road.

9 months ago

Sat Nov 17 2018

nature trips
Mon May 02 2016