a small, dome-shaped hill typically formed from volcanic ash and rock fragments may have a crater at the top colours may be grey, red, pink, or black may have a steep or gentle slope may be surrounded by other tuffs or other volcanic features
tuff which is a small, dome-shaped hill tuff which typically formed from volcanic ash and rock fragments tuff which may have a crater at the top tuff which has colours may be grey, red, pink, or black tuff which may have a steep or gentle slope tuff which may be surrounded by other tuffs or other volcanic features