On the following pages we can offer you some books about the work in the underworld association and a linklist of interesting travel destinations with an underground dimension as well as links to related web sites arranged by subject.

As introduction our newest suggestions.

We hope you will enjoy browsing.

This is the website of a scientific association concerned with archaelogical sites in Berlin and Brandenburg which are situated in rivers and lakes of the region. The category 'Aktuelles' (The latest) delivers information of the up-to-date diving campaigns …more

This brochure of 'Tour 3' follows the traces of the Cold War in the underground. In West Berlin civil defence shelters were reactivated or newly built in preparation for a possible nuclear war. Particularly after the building of the Berlin Wall, the West German government and the West Berlin senate invested millions in these projects. Some of these were built …more

The mountainous area around Viñales (some 150 kilometres to the west of Havanna) is riddled with caves. The whole territory with the undulating Mogotes is, in fact, a so-called “doline”, a collapsed cave. The Mogotes are in some places just as majestic as the rock formations in North America´s Monument Valley. And they contain countless holes and caves which the …more