Solis Campground offers two primitive roadside campsites (SO-1 and SO-2) located 13. 7 miles along River Road East in Big Bend National Park, providing easy access to the Rio Grande for river takeouts and Mariscal Canyon float trips.

The sites feature minimal amenities with no shade or toilets, small flat gravel spaces for vehicles up to 25 feet, and require a backcountry permit; note that River Road is high-clearance vehicle only and becomes impassable after rain.

Soft sand and gravel at the river launch may cause vehicles to get stuck, and theft has been a documented problem in this remote area.