The monument includes the eastern slopes of North Franklin Mountain, the highest peak in the area.

It is adjacent to Franklin Mountains State Park and Northeast El Paso and near the Organ Mountains–Desert Peaks National Monument in New Mexico.

Artifacts found include rock art, pottery, shelters, burial sites, and bedrock mortars dating from 250 to 1500 AD.

[7] In 2015, Congressman Beto O'Rourke introduced a bill that would create the Castner Range National Monument.

[9] Secretary of the Interior Deb Haaland visited the Range with Escobar in March 2022 and committed to promote access to nature.

[11] The site is still undergoing remediation of live munitions and ordnance pursuant to the Comprehensive Environmental Response, Compensation, and Liability (Superfund) Act and therefore is not accessible to the public.

[4] Native plants include the Alamo beard tongue, Sneed's pincushion cactus, and night-blooming cereus.