Along the south coast, 1, 120m-high Precipitous Bluff is one of the lowest peaks on the list, but conditions are so notoriously bleak year round that the mountain consistently foils hopeful summiteers.

BBC: Tasmania's greatest mountain quest

Members of the Carneddau Mountain Pony Society round the ponies up once a year to check on numbers and prevent inbreeding.

BBC: Bad weather kills half of Welsh wild pony herd

After the town's paper mill failed in the 1960s, a group of local investors led by Sherman Adams, one-time aide to President Eisenhower, developed a ski resort on Loon Mountain and turned Lincoln into a year-round recreation center.

FORBES: Local heroes

The car is self-operating, so use the wall-mounted phone to ring the mountain station before boarding, then pay the 13 Swiss franc round-trip fare as you exit.

BBC: In Swiss utopia, the devil dwelled

Their intelligence, in combination with their ability to mate year-round, is what has enabled wild pigs to evade capture and take over prairies, mountain valleys and rugged deserts from Canada to Mexico.

NPR: $1M Pilot Project Aims To Take Out Feral Pigs