Went out with my usual expeditioning buddy and took some traces of more footpaths West of Cambridge. This time primarily between Long Road and Hardwick (finishing off a network of paths that were mostly already completed there) and between Hardwick and Caldecote (also joining up with existing paths).

Whilst out there I also did some detective work: the out-of-copyright NPE maps show a stream that starts somewhere near Hardwick and goes down through Coton. I've surveyed portions of this stream directly where it went alongside footpaths and was able to use the NPE map to join these portions up. Similarly, NPE revealed that a stream I'd seen flowing from Dry Drayton to Hardwick was called "Callow Brook" and extended south into Hardwick itself...

My theory is that these are the same waterway and that the old OS surveyors just didn't have time to confirm that they joined up. I'm not able to check using satellite maps as there's no Yahoo coverage in the area. I was able to extend the path of the stream a bit more through direct survey; next time I'm hoping to take some compass bearings of whatever bits I can get to, in order to confirm that they join up. It's fun to explore :-)