Lotus Base is located on the sea erosion terrain at southwest side of Tongpan Island, which is actually in a structure of volcano entrance.  Because the surroundings were often eroded by sea water, hence, it was sunken, only center area has a small hill protruding overlooking from top or watch it afar, it is just like a giant, blossomed pretty lotus, so, it has another name, Lotus Base.
Especially when the tides are back, the whole lotus base will emerge totally overlook it from Groups of Basalt Stony Pole, it is like a lotus emerged from the water if at the time of sunset and with gold light left together, the whole picture is so beautiful without words to describe!
Take a close look at the lotus base after ebb, it is composed of basalt and circles surrounded with basalt at the center area is the sea water left from the high tide, but that is absolutely not mud, but a genuine basalt eroded by sea water only.  Only the small hills emerged in the middle is like bud of lotus which is particularly clear there is also a piece of grassland which grow up near basalt the whole picture is very beautiful.
Actually, Lotus Base is a Volcano Entry under the sea however, please be relived, this is not a living volcano that it is safe to visit!  The lotus base in the sunset will be lighted brightly any chance you have, must take a look!