Dave Mayville With countless 5.12 routes to his credit and an impressive string of first ascents Dave Mayville is one of Southern California's strongest and most highly respected rock climbers.

Known for his boundless energy and enthusiasm, Dave has the ability to teach and influence his clients like no other guide. When you climb with Dave those obstacles that used to hold you back will miraculously disappear and you will climb beyond your wildest expectations. With over 2000 days of guiding he knows the most unique climbs in the park. It doesn't matter if you are a beginning climbing or someone who wants to hit the hard classics, with Dave as your guide you are going to have a truly unique climbing experience.

His personality and enthusiasm leads to fun at the crags, and his reputation for long days with clients keep them coming back for more. Go climbing with Dave and get stuff done. He has the confidence, focus, experience and muscle to get up just about anything. A truly amazing, seemingly invulnerable climber, Dave is a major influence in the history of Joshua Tree climbing and in the lives of many.
Here are some of Dave's hard-hitting classics. Some like it hot (5.12)1990, Scorpion (5.13), Chameleon (5.12a) first lead, Middle Age Savage (5.12b) 1992, The Edge and many more. Climb with Dave Mayville and unleash your inner power!

Susan Cram

Susan has been a climber for 18 years starting her climbing career in Eldorado Canyon in Colorado. Since then she has climbed all over the world including; Africa, Asia, Nepal, Europe, Mexico and Canada. In the United States she has honed her skills in the Tetons, Wind River Range, Pacific Northwest, Yosemite Valley, and Tuolumne, the Sierras, Joshua Tree, Idyllwild, the Shawangunks and many other climbing destinations. She is not only a proficient rock guide but a mountaineer and ice climber.

Susan has worked for Yosemite Search and Rescue and the American Alpine Club. She comes to climbing full time after having a career in corporate America where she acted as Director of Technology for GMAC and most recently Vice President of Consulting for TIE Commerce, an Amsterdam based software company. After a leave of absence to build a school in Nepal she came to Joshua Tree for her annual visit that she has done since 1987 and decided that was where she was going to stay. She began guiding for Uprising Adventure Guides, Inc and bought the company in the spring of 2004.

Susan is an AMGA Certified Top Rope Site Manager and has spent the majority of her life teaching people how to climb. Come spend a day with a corporate gone climber and hear how you can break free from the rat race as well!

Theresa Walsh

Among the many roles Theresa has filled as a professional outdoor educator, her contributions to guiding and technical instruction are outstanding. Since 1989 Theresa has taught many adventuring enthusiasts good judgment skills, the art of risk management and having fun. Her experience has come from working with youth, adults, and womens groups at the National Outdoor Leadership School (NOLS), Pacific Crest Outward Bound School (PCOBS) and Yosemite Mountaineering School. Theresa has accumulated over 75 weeks of wilderness expedition experience.

Your Single Pitch Instructor Course Director:

Since 1985 Markus Jolliff has been practicing climbing. He began teaching climbing in 1989 with Outings at Cal Poly State University in San Luis Obispo California. In addition to studying Recreation Administration Markus  instructed climbing for the National Outdoor Leadership School in the Rocky Mountains of Wyoming and later in the North Cascades of Washington and Arizona, Nevada, Mexico for 10 annuals. Joshua Tree became  winter place of residence and a local guiding career grew with his cragging practice.  AMGA Certification as a rock instructor followed in 1998 in Yosemite and then some guiding for Yosemite Mountaineering school. Soon Uprising Adventure Guides became a solid anchor for markus in Joshua Tree where he started to facilitate entry level courses for the AMGA and now he is grateful to train and teach others SPI course directors.

Markus’ teaching style revolves around the participants needs and their learning style and based on systems and concepts that provide “tools” giving you the creative opportunity for style while practicing climbing.

Using systems, concepts, and tools like ingredients to a recipe, the teacher facilitates with timing and sequence developing a rich learning environment. With the participant and teaching learning themselves supportive practice becomes the norm.

John Durr

John started climbing in 1984 during college in Colorado.  Since then he has cragged and alpine rock climbed, iced climbed and mountain climbed extensively in North and South America completing over 100 hard traditional rock climbing and mountaineering first ascents in Colorado, Nevada, California and Peru.  John learned about climbing while long distance hiking as an Eagle Scout at the Boy Scout’s Philmont Scout Ranch in New Mexico and in 2006 retired from the international gold mining industry to be a full time rock climbing guide with his wife Diana (see below) in Joshua Tree.  John is a certified Single Pitch Instructor and has completed the Rock Instructor's courses. John also serves on Joshua Tree's Search and Rescue team and is EMT certified.

Diana Durr

Her outdoor enthusiasm began as early as 4yrs. old when she went on her first backpack trip with her father in the sierras. As a teenager Diana fell in love with rockclimbing through her experiences with the rock climbing section of the sierra club. Since then rockclimbing has become a life long passion. With over 25yrs. of climbing experience Diana has had the opportunity to climb all over the western United States. After raising their daughter Diana and her husband John (see above) are retired in Joshua Tree and can be found guiding or rockclimbing full time.

Diana is an AMGA Certified Single Pitch Instructor and has completed the AMGA Rock Instructor Course.