Complex sentence: Like many other old cornish coast towns, Pendeen was believed to be a secret place for smuggling activites off shore, 1 mile down a coast road from Boscaswell sits Pendeen Lighthouse and its noticable fog warning siren can be heard even from Trewellard.
Split into simpler sentences: Like many other old Cornish coast villages, Pendeen was believed to be a secret place for smuggling activities off shore. One mile down a coast road from Boscaswell sits Pendeen Lighthouse and its noticeable fog-warning siren can be heard even from Trewellard.