A mass of any rock, whether rounded or not, that has been transported by natural agencies from its native bed
A boulder is a large rounded rock. a large round piece of rock (From a language). City (pop., 2000: 94,673), north-central Colorado, U.S. Located in the Rocky Mountains northwest of Denver, it was settled by miners in 1858 and grew with the arrival of two railroads in 1873. An extensive government-industrial-educational complex has developed in recent decades. It is the site of the University of Colorado
A rounded rock on a beach, greater than 250 mm in diameter, larger than a cobble - see also Gravel and Shingle
a large rounded stone lying on the surface of the ground, or some times embedded in the soil, and generally different in composition from other rocks in the immediate vicinity
To climb close to ground level without the protection of a rope and belayer, but usually with a spotter An excellent way to focus on technique and power by working the same sequence repeatedly