Complex sentence: Cae Mabon is a retreat centre in North Wales, set in an oak forest close to the disused Dinorwic Quarry and on the opposite side of the Padarn lake from the town of Llanberis.
Split into simpler sentences: Cae Mabon is a retreat centre in North Wales. It is set in an oak forest close to the remnants of Dinorwic Quarry and on the opposite side of the Padarn lake from the town of Llanberis.