Weathering the storm. John filling us in on the Lands End area

Searching for Tin and Tourmaline at Botallack

The old arsenic mine at Botallack

Megacryst-rich granite at contact with 'the roof' at Porth Ledden

Dyke with crystal alignment observed by The Brave at Porth Ledden

No, not sedimentary rocks but greissenised granite at Cligger Head.

Examining the greissen in more detail - dark tourmaline-rich stripes and pale quartz-rich ones

'Old Men's workings' at Cligger Head. Tin was mined from seams with the use of ropes from the cliff tops

Rhyolite dyke at Cligger Head.

Looking for the contact of country rocks and Dartmoor granite at Barrator quarry.

Found! The Dartmoor granite, Barrator.

Jenny explaining tor formation at Sheep Tor.