Dogurial is a nature reserve on the coastal road in Sindo-ri, Seogwipo, where black basalt shorelines and tide pools can be seen. Around sunset, dolphins appear above the water's surface, and marine life such as hermit crabs can be observed in the pools. Instead of a separate parking lot, visitors park on the wide shoulder, take photos, and look around briefly, and it stays quiet because there are not many people. Dolphins may not be visible when the wind is strong or the weather is cloudy.