500 million year old greywacke rock, worked on by volcanic action and later ice ages, formed a blow hole at Logan which in Victorian times became used as a fish larder. Work to adapt the natural rock formation was completed in 1800, and live sea fish stored in the 'Fish Pond'. You can feed the fish, see the Fish Keeper's Cottage and the restored Bathing Hut and Bathing Pool, a reminder of family days out in a summer nearly 200 years ago. Recent additions include the Cave Aquarium, Touch Pools and gift shop. (14 miles S of Stranraer, off B7065, 1 mile from Logan Botanic Gardens, where it is well signposted)

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