Editing Colorado (section)

===South Central region===
[[File:ChicoClosedBasin.jpg|thumb|The high desert lands that make up the San Luis Valley in Southern Colorado]]

In south-central Colorado is the large [[San Luis Valley]], where the headwaters of the [[Rio Grande]] are located. The northern part of the valley is the [[San Luis Closed Basin]], an [[endorheic basin]] that helped created the [[Great Sand Dunes National Park and Preserve|Great Sand Dunes]]. The valley sits between the [[Sangre de Cristo Mountains]] and [[San Juan Mountains]]. The Rio Grande drains due south into New Mexico, Texas, and Mexico. Across the [[Sangre de Cristo Range]] to the east of the San Luis Valley lies the [[Wet Mountain Valley]]. These basins, particularly the San Luis Valley, lie along the [[Rio Grande rift]], a major [[geological formation]] of the Rocky Mountains, and its branches.