17 National parks visited by David Andersen

Ala Archa National Park

Death Valley

Denali National park

Grand Canyon

Isalo National park

Kinabalu park

Mana Pools National park

Manuel Antonio National park

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Nahuel Huapi National Park

Omo

Ranthambore National park

Sequoia National Park

Sinharaja

Skeleton Coast National park

Tierra del Fuego National Park

Yala National Park

Yosemite National park