The purpose of this cache is also meant to share the scenic views that are left to be seen as surrounding structures might be an eyesore but the view over the cliffs could be interesting to many. The place is frequently (almost daily) visited by fisherman on various altitudes and also by some who seek to go for a swim.
If you happen to know even more info about the place or building please let me know :)
To start go to the available GPS coordinates and follow the hints. Just like a normal multicache but in some points you will not be seeing coordinates. Follow the instructions in each container to find the next one.
More information will be available in containers.
Online hint is just for the first stage.