Most visitors to Prague Castle make their way up the hill from the city via the old route to the east. On the initiative of the former president of the Czech Republic, Václav Havel, the castle area has now been reorganized and the whole of the Deer Moat made accessible to the public. As a result of this, it was possible to create an additional, more intimate pedestrian route that ascends from the banks of the River Vltava to the top of the hill, removed from the main tourist streams. Conceived as a piece of landscape architecture, the path leads over stone slabs, small steel bridges and timber walkways through the natural surroundings of the Deer Moat north of the castle. For part of its length, the route is in the form of a pedestrian tunnel, which passes through the hill and beneath the Powder Bridge, thus linking the upper and lower parts of the Deer Moat. After the moat had lost its original function in the 18th and 19th centuries, one section was filled with earth, including the openings beneath the bridge. The tunnel, which leads through these earthworks for a length of 84 metres, was designed with a vertically elliptical cross-section to alleviate any sense of oppression.