Salt Pump Climbing Co.

Salt Pump Climbing Co. runs a bouldering facility in Portsmouth, New Hampshire, which many people call The Donut Factory. Bouldering means climbing short walls without ropes, and the gym offers climbing classes and youth programs for kids who want to learn. A shop sells cozy softgoods and Salt Pump prints.

Memberships can be joined and managed online, and newcomers can read a start-here guide covering hours, rates and common questions. The gym stays open late on weekdays, opens at 10 AM on weekends, and closes earlier on Sunday. The company also operates gyms in Newburyport, Massachusetts, and Scarborough, Maine.