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.
Blackheath, New South Wales
Blackheath (postcode: 2785) is an Australian town located near the highest point of the Blue Mountains, between Katoomba and Mount Victoria in New South Wales. The town's altitude is about and it is located about west north-west of the Sydney central business district, north-west of Katoomba, and about south-east of Lithgow.