In fact, there supposedly are only a few witnesses of the detonation of the atomic bomb back in 1945.Sure windows were blown out in Socorro over a hundred miles away and the ground supposedly shook in Albuquerque but few actually saw the mushroom firsthand.
It is also one of the few sites giving visitors such direct access to petroglyphs.
Another short trail begins on the east side of the picnic area and leads to the remains of a Mogollon village, whose inhabitants were likely responsible for the petroglyphs.
Occupied for about 400 years, the site was partially excavated in 1976.
The petroglyphs at Three Rivers, dating back to between about 9 AD, were created by Jornada Mogollon people who used stone tools to remove the dark patina on the exterior of the rock.
A small pueblo ruin is nearby and Sierra Blanca towers above to the east.