Russia is ignoring the environmental impact of construction work for the 2014 Winter Olympics in Sochi, according to a UN environmental programme report.
Most facilities in the Black Sea resort have been built from scratch, and have already caused irreversible damage to bird and bear habitats.
Due to the lack of space, building planners in Sochi are adopting a cluster strategy, with a cluster around the coast catering for ice skating and a mountain cluster accommodating skiing events.
This system concentrates the environmental damage in a very specific place.
The UNEP reports said Russia has not taken into consideration the cumulative effects of the various construction projects.
Environmental activists Greenpeace and the World Wildlife Federation recently suspended their cooperation with the Olympic committee claiming their views were not being taken into account.