ROCK CLIMBING

Thailand is no stranger to this sport, not least because of its reputation among foreign climbers and its favorable geology. A limestone karst system runs the length of the country’s western spine, from the northern province of Mae Hong Son all the way to Krabi in the south. For climbers making the journey from overseas, the walls of Krabi are the main draw, towering as they do dramatically above the Andaman Sea. Visitors flock here to try their hand at deep-water soloing, which describes the practice of climbing without the aid of safety ropes and harnesses, using only a body of water below as a cushion. But those who prefer climbing with gear and permanent anchors can take their pick from the plethora of bolted routes around Krabi. One of the original operators that first developed the area for the climbing is King

Climbers ( railay.com); today it remains the largest and among the most reputable of the bunch.

Tonsai Base Camp ( basecamptonsai.com) is the go-to outfit for deep-water soloing, while beginners can try out their best-selling course, a threeday primer on basic climbing skills.

In the north, Chiang Mai Rock Climbing Association ( thailandclimbing.com) has long been a leader of the sport. Much of its activities are centered on the Mae On district around Crazy Horse Buttress—named for a distinct rock formation atop the crag that resembles a horse’s head—while anyone seeking out an underground adventure can book a full-day introductory caving course, or a two-day trip that combines cave exploration with climbing outdoors.