AllTrails has 2 great hiking trails, biking trails, running trails and more Enjoy handcurated trail maps, along with reviews and photos from nature lovers like you Ready for your next hike or bike ride?The Río Grande del Norte National Monument is comprised of rugged, wide open plains at an average elevation of 7,000 feet, dotted by volcanic cones, and cut by steep canyons with rivers tucked away in their depths The Rio Grande carves an 800 foot deep gorge through layers of volcanic basalt flows and ashRio Grande del Norte National Monument The Ro Grande del Norte National Monument is comprised of rugged, wide open plains at an average elevation of 7,000 feet, dotted by volcanic cones, and cut by steep canyons with rivers tucked away in their depths The Ro Grande carves an 800 foot deep gorge through layers of volcanic basalt flows and ash Rio Grande Del Norte National Monument Hiking Trails Rio grande gorge trail maps