They set up tents on the ice, 2 feet of ice over 70 feet of water.
[I've had some second thoughts about the initial draft of this poem. So I changed a few words (so the "barbarous" Canadians are not waking across the Lake for guns!). This takes some edginess off this poem, but makes it more reasonable, I think. The poem grew out of 2 short poems that I wrote many years ago about the frozen Lake Erie. One of those poems ended with the lines: "I could walk to Canada / If I had the imagination." Well, this poem takes that imagination a step further! I tried to pair up this story line of walking across the frozen lake with the historical fact of the Germanic ("barbarian") tribes crossing the frozen Rhine River around 406 AD, leading eventually to the fall of the Roman Empire. I use the term "barbarous" ironically, of course, to describe both the Canadians and the Yanks.]
"Mea Culpa," O Canada, for that first draft!