Sills (geology)

A tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or along the direction of foliation in metamorphic rock

island group in the Outer Hebrides, Scotland, UK

mountain in Tasmania, Australia

rock formation

dolerite mountain cliff, Northern Ireland

mountain in Ontario, Canada

Layer of dolerite rock in northern England

island in United Kingdom

intrusive igneous body that forms the cliffs largely following the southern portion of the Hudson River

mountain in Ontario, Canada