You climb into an air-conditioned vehicle in Kuala Lumpur and the city thins behind you—towering glass gives way to lane-cut hills and the road tucks into cooler air as you approach Genting Highlands. Halfway, the car pulls into Batu Caves: a limestone wall that rises out of the suburban plain, its 272-step flight and a towering deity statue dominating the entrance. This is a photo stop, but the place still speaks of faith and geology: carved caverns hold Hindu shrines, and layers of calcium carbonate form pockets and chambers that rock climbers test and photographers favor.