The Imperial Sand Dune Recreations Area (ISDRA) is a victim of abuse of the Endangered Species Act (ESA) where 49,300 acres were temporarily closed as part of a March 2000 lawsuit settlement pending a Recreation Area Management Plan (RAMP). The plan and its components were challenged several times by the anti-access groups and it took approximately 14 years for the new plan to be implemented.
In 2014 the new plan re-opened the 49,300 acres. However, the Bureau of Land Management(BLM) wanted a plan that would withstand further legal challenges and so closed approximately 9,000 acres of land deemed critical habitat (CH) that were open before the initial lawsuit. This closure included the Patton Valley Travel Corridor (PVTC): a section of dunes that heretofore had never been closed.