Finishing the Triangle Series

Today I visited the third and last traditional cache of the Triangle series (GC1WN6D-Triangle I: Jachthaven) we logged it at 14:25.
With this last we were able to figure out the bonus of the Triangle Series:
GCJ0MG-De enige echte Triangle
For this one we had to find the correct information on the Internet to composite an email address. Sending an email to this address returned the approval to log the final cache, we logged it at at 15:20
We earned the next banner with finding this complete series.