becky and i did a couple of the trails at big bend when we went in september. did a couple 4wd trails that were mostly rocky and had wash outs. no body damage could be done. 4lo only couple times. one trail was 26 miles, the other was a couple of miles since we turned back due to daylight. river road trail was closed due to previous flooding. we did the north rosillos county rd to terlingua ranch, 23 miles, suppose to be car friendly, but due to flooding, 4wd-lo. really wanna go back next year, but with brothers wedding and procrastinating honeymoon for 2+ years..... may not make it.