Complex sentence: Doolin Cave is also a member of the Burren Ecotourism Network (B.E.N.), which is committed to the promotion of responsible tourism that conserves the environment and improves the wellbeing of local people.
Split into simpler sentences: Doolin Cave is also a member of the Burren Ecotourism Network. B.E.N.is committed to the promotion of responsible tourism that conserves the environment and improves the well being of local people.