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mickmassie: Sycamore Gap
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mickmassie: Sycamore Gap
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mickmassie: Steel Rigg - Great Whin Sill complex - Carboniferous Sandstone up to 337MYA
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mickmassie: Sycamore Gap
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mickmassie: Steel Rigg - Great Whin Sill complex - Carboniferous-Permian up to 337MYA - Igneous Pegmatitic (large grain) Quartz Dolerite (microgabbro)
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mickmassie: Steel Rigg - Great Whin Sill complex - Carboniferous Sandstone up to 337MYA
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mickmassie: Milecastle
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mickmassie: Steel Rigg - Great Whin Sill complex - Carboniferous Sandstone up to 337MYA
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mickmassie: Steel Rigg - Hadrian's Wall