Mount Hekla is an active stratovolcano located in Iceland; and, its unique shape resembles an upside-down boat. A series of fissures runs across its 3.4 mile-long ridge, and are thought to resemble the boat's keel.
According to NAT travel guides, the Hekla volcano has erupted dozens of times in recorded history. The most recent eruption occurring in 2000. In that eruption, a steam column rose to a height of 15 kilometers, and a pyroclastic flow of molten lava extended approximately 5 kilometers from the crater.
During the Middle Ages, Mount Hekla was known throughout Europe as one of two entrances to hell; the other was Stromboli, an active volcano off the coast of Southern Italy.