The proposed construction of a controversial 53-kilometer tarmac road through Tanzania’s Serengeti National Park may be delayed by government orders for a new environmental impact assessment. Photo: Courtesy of Wikipedia Conservations say that a paved road through the wildebeest migration path would be a “disaster.” The proposed stretch of road—designed to link eastern and western Tanzania—would cross migration routes of some two million wildebeests, attracting worldwide criticism as local and international conservation groups are pressuring the Tanzanian government to re-route the project. Pushing a road through the park, they argue, would expose wildlife to speeding vehicles and attract commercial development
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.