Summary:

If you’ve ever driven on Utah’s highway 191, you’ll witness some fantastic scenery. Most noteworthy are the arches, such as the Wilson Arch on the way South to Monticello.

There is a little road pulloff just South of the arch itself, which will allow you to access the wash. If you’re unfamiliar, a wash is a dry riverbed - often these are great places to find a healthy mix of stones from the area.

In the wash, you’ll notice some red, white, and yellow chalcedony. None of which I found super exciting, if I am honest. However, these coordinates are just a starting point. If you backtrack up the road about 1/4 mile, there is a road that will allow you to access more of the same wash to the West. I found much more agate (with a broader spectrum of colors and even some fortification banding) after doing so.

You’ll likely want a 4x4 vehicle for that. The road was chopped up from both cattle ranchers and offroad vehicle tours that seemed to be going through the area.