We found this spot driving around Chittering and decided to drop a cache off so others would come too. This is the site of the Lower Chittering School and Hall (1920-1952). In 2014 local scouts created the art that is now here. The art is part of the Chittering Sculpture Trail (see: http://www.chittering.wa.gov.au/sites/chitteringwagovau/assets/public/File/Chit%20Chat%20Trail%20Notes/SCULPTURES.pdf)
You are looking for a black tube.
BYO pen.