Burke and Wills, geocaching and the SLV

As part of their activities to commemorate the 150th anniversary of the ill-fated Burke and Wills expedition, the State Library of Victoria has got into geocaching. A series of caches will be placed along the route that the expedition took, as well as at other sites associated with the explorers. Sounds like it could be fun – I wonder if something like this could work with the Lachlan Macquarie bicentenery celebrations?