Source: Z_FLuX_Z via imgur.com
Photograph via imgur.com. Find out more: snoqualmiefalls.com.
The 1982 construction of the Ratchaprapha Dam by the Electricity Generating Authority of Thailand was a complete tragedy for the wildlife of Khao Sok National Park.
Landscape Arch is the longest of the many natural rock arches in this national park and second longest in the world. This arch is an arc natural arch eroded in Entrada sandstone.
Photograph by Vernon Swanepoel
Photograph by Svenia Schreiner (link has been removed due to the user no longer being active on Flickr)
Caddo is one of Texas’ few non-oxbow natural lakes and is the 2nd largest in the South; however, it was artificially altered by the addition of a dam in the 1900s.
Photograph by edme via reddit
Photograph by only_eats_plankton