Camp Trinity on the Bar 717 Ranch | 65 followers on LinkedIn. An overnight ranch summer camp for kids ages 7-16 in the beautiful mountains of Northern California. | Camp Trinity on the Bar 717 Ranch is an overnight summer camp for kids ages 7-16 in the beautiful mountains of Northern California. For more than 90 years, we have welcomed children to our family ranch surrounded by pristine wilderness to experience nature, form deep friendships, and have big fun. Life on the ranch is rustic and unplugged.