[Talk-GB] Canal ventilation shaft oddity

[Andy Mabbett]

Here's a curious garden feature, for a modest semi:

    https://www.openstreetmap.org/node/11587750468

A canal ventilation shaft, long pre-dating the house!

It's on Station Road, Old HIll, West Midlands, and can be seen here:

   https://maps.app.goo.gl/CT4jpMPkYkYMcPox6

How can my tagging of it be improved?

-- 
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk