From 3 to 31 May 2011 the National Museum of Natural History presents the Sofia's audience and nature environment's admirers an unusual collection of works, part of the Sofia Paper Art Fest, which are primarily art on paper.
The implication is graphic and powerful, creating monumental feeling in the chamber space of the museum, which presents the works of authors from different countries. This two-dimensional environment is enriched by the work of Rumen Rachkov, whose sculpture has a suggestion of a natural form.