Fall foliage on a tranquil babbling brook at Lost Maples State Park in Texas, USA
Ritymmen bridge is the longest living root bridge in Meghalaya in India
Mountain stream, upper part of Krimml waterfalls, High Tauern National Park, Austria
Stream in valley, Adaigom Waterfall, North Ossetia-Alania, Russia
The cave of Natural Bridge, Springbrook National Park, Queensland, Australia
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