The ice appears to be flat. Ideal for iceboating if the ice is thick enough.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/24854893@N00">Robert Taylor</a> from Stirling, ON, Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/bobolink/6911385197/">Ice Boat, Oak Lake_6067</a>