The bright sunshine in the morning always cares about the coastline in the northwest of Tanah Island. The blue sea is full of ripples, and the tides on the shore retreat to the distance. In the pure sea water, the coral reefs connected to each other stretch for dozens of miles, with an elliptical blue water area in between, overlooking the sky, like the pupil of the sea, the magical Tanner Blue Cave. The mysterious and fantastic blue hole is like a dazzling pearl on the coast of the island, surrounded by beautiful corals. From the pocket-sized Tanner Airport, take the pickup truck all the way north, accompanied by the dust flying along the way, through the quaint paths surrounded by the jungle, and soon you can reach the waters where the blue caves are located.