Mono Monday Challenge: Sharp

I struggled with the Mono Monday themes last month although I was pleased that the one entry I did make was selected for a heart.  This week the challenge is a bit easier although I can see some very inventive entries have already been put up.  I don't think mine is particularly inventive but it is certainly sharp; taken on a walk alongside the Leeds and Liverpool Canal this morning before getting onto the M6 for the journey back from our flying visit to the North West.

Thanks to JDO for hosting the challenge this month.