My family of four (kids age 13/8) went on a climbing trip with Clay from Ground Up Climbing Guides this past weekend. We had an amazing time. Clay is friendly, informative and very safe. We learned so much and had a blast. We challenged ourselves in a safe, supportive and encouraging space. My daughters had climbed in climbing gyms, but they were able to work on their skills in such a beautiful natural setting. I'd never been climbing before, but I caught on quick. I would recommend this activity to any adventurous family coming to Mammoth. And I would absolutely recommend Clay for his kindness, patience and enthusiasm.