In August 2011, Carl and Pete went out to explore Geocaching, the outdoor hobby that uses GPS and Smartphones to track down hidden treasure. We feature Geocaching in Show 67 of our radio show, but did not have time in the show to include the full audio from our field trip. Here it is, as bonus material for our listeners. For more on Geocaching, please go to: https://www.frequencycast.co.uk/geocaching.html