That’s remarkable, but we’ve found other huge boulders moved by waves. This boulder, however, started off on top of a 30 meter (100 foot) high cliff, beyond the reach of normal sized tsunamis ...

Superstorms, huge waves, giant rocks: Scientists have theories about the ancient Bahamian boulders. What happened thousands of years ago could happen again.

A giant boulder, made of limestone and mistaken for a hill, in Tongatapu, the largest island of Tonga in the South Pacific. Scientists calculated that the boulder weighed more than 1,300 tons.

A South Haven company placed large limestone boulders along the Lake Michigan shoreline to protect a threatened home. South Haven Area Emergency Services photographer Tom Lenner said crews from ...

Renner said deBest is bringing 10,000 tons of limestone from Manitowoc, Wisconsin across Lake Michigan to Holland. It is then being trucked to erosion control projects between Fennville in Allegan ...

The limestone used to construct the limestone boulder sites had specific gravity of 2.1 to 2.6 and median diameter of 3 ft. These specifications ensured that the boulders maintained their ...

Shakeholes are formed where surface water washes the boulder clay down into cracks or fissures in the limestone under the boulder clay. They are usually found in groups.

A new high-tech analysis led by a University of Colorado Boulder researcher shows the oldest known petroglyphs in North America, which are cut into several boulders in western Nevada, date to at ...