Blue Hole (Big Pine Key)
The Blue Hole is an attraction on the island of Big Pine Key in the Florida Keys. It is an abandoned rock quarry that was used for nearby road fills and Henry Flagler's Overseas Railroad. The water it contains is mostly fresh and is used by various wildlife in the area, such as birds, snakes, alligators, key deer and green iguanas. It is part of the National Key Deer Refuge.
Oxley Wild Rivers National Park
The Gara Gorge is located south-east of Armidale along the Castledoyle Road off the Waterfall Way just east of Armidale. The remains of Australia's first public hydro-electric scheme can be viewed here. Gara Gorge is picnic area with tables, drinking water, toilets and gas barbecues. Known for scenic bush strolls and the Blue Hole which is commonly used for swimming. The Threlfall Walk follows the route of the historic 1894 hydro-electric scheme, along old embankments and through ancient cuttings, to a lookout platform high above the river. Crombies Cave, the longest granite cave in Australia at , can be found in the next small creek, Powers Creek, an easy walk to the south of the Blue Hole. As the creek flows under the fence from the surrounding grazing country, within it begins its journey underground to come out down stream. The cave can be accessed from here and negotiated for at least half its length. It contains very beautiful granite sculptures, gnammas and potholes, some big caverns and a small sandy beach near the lower exit. A climb down a small waterfall and a curving squeeze can be difficult for some to negotiate. The exits downstream can be difficult to find from the outside.