northernireland
‘Isolated rock and whyn dyke at Port Cooan’
‘Whyn dyke at Rovin Valley’
‘Basaltic tower called Castro Levit at the foot of Magilligan Facade’
‘Oblique undulating dyke near Seaport one mile west from the Giants Causeway’
Giant’s Causeway
Giant’s Causeway
Volcanic neck, Cushendall
Giant’s Causeway