Deutsche Beschreibung THE PROJECT

: D wie Düsseldorf

:D Düsseldorfs Geometry

We have a triangle where the basic points are Rheinturm (A), Ständehaus (B) and Tonhalle (C).

Each side of the triangle is divided by a point:
AB has a distance of 638m from A
BC has a distance of 364m from B
CA has a distance of 1249m from C

By connecting the following points A - AB - CA / B - BC - AB / C - CA - BC you will create 3 triangles within the triangle A - B - C.
If we construct the circumcircle of each of these triangles, these three circles will meet in one point called X, where you'll find the cache hideout.

To compensate any inaccuracy of mesurement, the geochecker is set with tolerance. Please use it to receive the exact coordinates!


Every geocache of the :D series contains a bonus code. Please write it down, you will need it in order to log the two bonus caches GC49RXJ and GC44Q3J!

Additionally you can track every bonus code at


There is no geocache to find at the listed coordinates. No cache which is part of the :D series requires to trespass rail tracks or highways. Caches located on private property have been placed there with explicit permit of the owner. If a riddle requires visiting third party websites or downloading additional files, we guarantee that at the time of publish, they don't contain any virus or harmful software.

725 Jahre Düsseldorf

Flag Counter