The Mapua a’ Vaea Blowholes, an iconic natural wonder on the island of Tongatapu, present a dramatic display of nature's power along a 5 km (3 mi) stretch of coastline. These blowholes, formed by waves crashing into the southern coast’s volcanic rock, create stunning plumes of water shooting up to 30 m (100 ft) into the air. This awe-inspiring phenomenon, a must-see for any visitor to Tonga, showcases the raw beauty and force of the ocean.