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.
Woods Hole (passage)
Woods Hole is a strait in Massachusetts separating the Elizabeth Islands from the village of Woods Hole on the mainland of Cape Cod. It is one of four straits allowing maritime passage between Buzzards Bay and Vineyard Sound. The others are Canapitsit Channel, Robinson's Hole and Quick's Hole. Woods Hole is often referred to as Woods Hole Passage to distinguish it from the village of Woods Hole, which is itself named after the passage.