Hard to tell, but it looks like a litter (basket-shaped metal stetcher) on the bottom and a toboggan on the top, order of which would be reversed in actual use. Dig it out?
I agree. It looks like both a tobaggon and Stokes basket. It will also state the obvious and say that it also looks like there use to be a door that was locked on that end of that culvert pipe. It clearly shows the three hinges on top and what appears to be a hook to put a lock through on the bottom.