Semperviva
 The Bulgarian Biodiversity Preservation Society Semperviva is a non-governmental biodiversity conservation organization. Semperviva was founded in 1997 and works in close partnership with the Balkani Wildlife society. A project house in Vlahi provides the Balkani Wildlife society with a base from which to undertake biological field research on large carnivores and also provides accommodation for volunteers. Semperviva is a network partner of the European SAVE Foundation.