I've got a lean to (like the one shown in the picture, but much smaller... a little over 1/4 the length total)...
The temperature may get to -20 and there will be wind and snow as it's winter.
My question is, is would that be okay shelter for a weanling and older mare (approx. 23) over the winter.
They will have free choice hay, but that's it. What would you say?
Just that I've always had 3 sided shelters.