Seeing as the sun was shining so nicely this weekend, I thought I'd head out and follow the relatively new "Tour by Cycle" series of geocaches - a 20km walk around Harpenden, Redbourne and Hemel Hempstead Industrial Estate.
Unfortunately it seems someone else had the same idea, but wanted to spoilt it for use genuine geocachers!
Find out more at http://bit.ly/cTP9qW