ALTER DO CHÃO: EXPLORING TERRAS D´ALTER WITH GPS.
For the born explorers, we suggest looking for a Geocache, you may find around here following the coordinates indicated in www.geocaching.pt. To play you should login. When you find the cache, you shoud take a souvenir out of the box and place another one you should have brought along. When you decide to play don’t forget to book an Alter do Chão Genial.