Old woodface
This is the end of a huge beam that slots into grooves in front of lock gates. When you fill these grooves with these huge beams, they stop ice from slamming into the gates over the winter.

This is another shot from the walk at Black Rapid lock on the Rideau Canal. Feeling a bit under the weather today, we'll see about a picture tonight. I have an idea for Saturday though...
Posted: 2009-10-23.   Shot: .
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1/160 sec   f/5   45 mm   ISO 100