Grower Quarry
Grower Quarry is situated on the coast between Boscastle and Trevalga. The slate quarried along this stretch of coast was deposited in the transition between the Devonian and Carboniferous periods, around 360 million years ago, when Cornwall was still at the bottom of the (Rheic) Ocean. The older Upper Devonian slates (which is the period in which Delabole slate was deposited) are harder and finer than those that came later. The later slates, deposited as the ocean became shallower, are more likely to contain fossils.
On walks
- Boscastle to Rocky Valley (6.2 mile walk)
- Boscastle to Tintagel (via bus) (5.5 mile walk)