Small,circular surface depressions usually found at or near the summit of a volcano are known as

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Small, circular surface depressions found at or near the summit of a volcano are known as craters. Cinder cones are steep-sided cones made of volcanic fragments and lava that accumulate around a single vent. Calderas are large, basin-shaped depressions that form when a volcano collapses. Domes are rounded mounds of volcanic rock that form when lava piles up around a vent. Shield volcanoes are broad, gently sloping volcanoes formed by the accumulation of many thin flows of fluid, low viscosity basaltic lava.

Small,circular Surface Depressions Usually Found at or near the Summit