The Yonaguni Monument appears to be a collection of underwater pyramids and structures off of the coast of Japan. According to wikipedia:
The Monument consists of medium to very fine sandstones and mudstones of the Lower Miocene Yaeyama Group deposited about 20 million years ago. Most of the formations are connected to the underlying rock mass (as opposed to being assembled out of freestanding rocks).
The main feature (the "Monument" proper) is a rectangular formation measuring about 150 by 40 m (490 by 130 ft) and about 27 m (90 ft) tall; the top is about 5 m (16 ft) below sea level. Most of its top surface consists of a complex series of terraces and broad steps, mostly rectangular, bounded by near vertical walls.
Some of its peculiar details include:
- Two closely spaced pillars which rise to within eight feet of the surface;
- The "Loop Road", a 5 m (16 ft) wide ledge that encircles the base of the formation on three sides;
- The "Totem", a stone column about 7 m (23 ft) tall;
- The "Dividing Wall", a straight wall 10 m (33 ft) long;
- The "Gosintai", an isolated boulder resting on a low platform;
- The "Turtle", a low star-shaped platform;
- The "Triangle Pool", a triangular depression with two large holes at its edge;
- The "Stage", an L-shaped rock.
There are those that believe the rocks are natural formations and others believe they are not.
by Rita Jean Moran (www.thelibrarykids.com)
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