Date & time set, more details coming soon.
We'll be splitting into two groups: one starting at Indian Hollow (east side of the Organ Mountains), and one at La Cueva (west side of the Organ Mountains). We'll meet at the top of the pass separating Indian Hollow and Fillmore Canyon, swap keys (i.e. someone else will drive your car back to the end point, we will not turn around), and then continue to the opposite side of the mountain range.
Expected mileage is ~8 mi, 2000+ ft elevation gain, with quite a bit of off-trail. Should take all day.