high altitude
kids' activities
waterfalls
Salmon River Mountains
Mayotte
nordic skiing
Antarctica
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Tajikistan
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Tokelau
South Africa
Tahoe
Europe
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🔍
caves at Hirschaid, Germany
Maiden cave
22km
wiki
web
Bing Cave
26km
wiki
web
Shell source
26km
wiki
web
Schönstein Cave
28km
wiki
Rosenmüller cave
29km
wiki
web
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