Fans of accessible trails now have one more resource to learn about wheelchair accessibility of San Francisco Bay Area trails. Mark Hehir is actually a Muscular Dystrophy survivor and a wheelchair user. As in nature, one learns to adapt to their environment and, for Mark, that meant adapting to the world around him with physical limitations and from a wheelchair. Seeing that there was little information on accessible hiking trails, he began making videos of each trail he visited so he could share with others in wheelchairs. Mark is a published writer, composer, videographer, and amateur nature photographer. You can visit his blogsite here.