I just seen this today on FB Explorers of the Mojave..
Nightmare Gulch
Kevin this was supposed to be a temp closure and believe that was in the fall of 2013. Repeated attempts to get in touch with the local ranger and the regional manager have not been very successful into getting to know why the canyon was closed to vehicle traffic or when it will re-open to the same. In late 2015 we MTB'ed down the canyon and there were some areas where the canyon wall had slid down but there was not full blockage as we could still ride through it on our MTB's. Not passable to vehicles but something that could be remedied in short order. 4wd high clearance will still be required when and if this blockage ever gets cleared. At this time of yr there is closure of the area due to raptor nesting. For some reason these birds can procreate in the middle of a major city with no problem but in Red Rock they need "peace and quiet" and for humans to not be present. You will have to google to find when this time period is over. However, with that said, if you come in through the Last Chance side of Nightmare you can hike pretty much all the way through it, just don't wander into the open area at the opposite end of Last Chance as that is the raptor nesting area. Link to the temporary closure.
https://www.parks.ca.gov/pages/631/f...2010-22-13.pdf
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