Pawtuckaway Ring Dike

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About 275 million years ago, another episode of tectonic pressure created circular fractures in the area and another swell of magma was forced up creating what is known as a ring dike. Nearby volcanoes spewed lava and ash, long since eroded. But the ring dike remains and forms the outer circle of the Pawtuckaway Mountains. This is one of three ring dikes in New Hampshire; Ossipee and Gunstock are home to the other two.
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Wikipedia article: http://en.wikipedia.org/wiki/Pawtuckaway_State_Park

Nearby cities:

Coordinates: 43°6'34"N 71°11'28"W

Pawtuckaway State Park 2.5 km
Bear Brook State Park 20 km
Heath Pond Bog Natural Area 74 km
Saco Heath 77 km
White Lake State Park 82 km
Scarborough Beach State Park 86 km
Sebago Lake State Park 104 km
Echo Lake / Cathedral Ledge State Park 107 km
Conway Common Lands State Forest 108 km
Range Pond State Park 124 km

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