For the long-legged, this walkway is a short hop, skip & a jump along part of Cambridge town belt. When our kids were toddlers, however, even short walkways like this seemed to take forever. So, this cache is for those trying to coax those with little legs to walk a little bit further along the path - just an itsy bitsy bit further to go to the next one 
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There was a scary cache guardian for the original cache but both the cache container & the guardian have gone missing ... maybe you'll find the original during your search ??!