
Cobble stones are stones used in the pavement of early streets, these cobble stones are smooth stones which were usually taken from riverbeds. They are typically either set in sand or similar material, or are bound together with mortar. Paving with cobblestones allows a road to be heavily used all year long. It prevents the buildup of ruts often found in dirt roads.
Having an additional beneficial advantage of not getting muddy in wet weather and dusty in dry weather, cobble stones are often retained in historic areas for streets with vehicular traffic. Cobble stone smaller than a boulder and larger than a pebble are fireproof and need little maintenance