Lady's Window
The rock arch on the cliffs at Trevalga, known as the Lady's Window, was formed around 370 million years ago. Sediments laid down at the bottom of the ocean, initially formed crumbly shales. Around 40 million years later, when Cornwall was pushed out of the sea, the intense pressure and heat from the colliding contents transformed some of the shale into hard rocks called phillites. The softer rocks above have been worn away, exposing these hard rocks. Gradual weathering has created the hole through the middle.
On walks
- Boscastle to Rocky Valley (6.2 mile walk)
- Boscastle to Tintagel (via bus) (5.5 mile walk)