fotografías españoles - matallana
Preparing the opening for the Groasis waterboxx experiment in Matallana April 2010
Filling the boxes with water
Groasis waterboxx in Matallana April 2010
Another Groasis waterboxx in Matallana
Pieter Hoff thanks the guests and invites them for a toast
Toasting on the success of the Spanish experiments with the Groasis waterboxx
All guests enjoy the toast