Combi Cobbles

A cobble is a clast of rock defined on the Udden–Wentworth scale as having a particle size of 64–256 millimeters, larger than a pebble and smaller than a boulder.

Category: cobbles Tags: cobble fan, cobble square, cobbles, combi cobbbles, concrete cobbles

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A cobble is a clast of rock defined on the Udden–Wentworth scale as having a particle size of 64–256 millimeters, larger than a pebble and smaller than a boulder.