No doubt. I was primarily scouting the area this trip for next May but did run Old Maverick Road, River Road East and Glenn Spring Road in BIBE; all three were improved dirt roads. Some have dry washes that could be tough in wet, muddy weather. If dry, a Subaru Outback would make quick work of these roads. I didn't drive Black Gap Road, which I hear is the most challenging road in BIBE - I saved that trail
for the FJ40 in May
Black Gap road is challenging if you have a Jeep.