Friday, the contractor showed up early, a bit frantic to get the subfloors in before the big winter storm hit. He didn't like the idea of his foundation getting full of snow. So a huge truck showed up with lots of rocks to line the crawl space. They tried to get up the hill with no success (and a lot of damage to the lawn - though it was pretty ugly anyways.)
Finally, they gave up and dumped the rocks on the sidewalk.
At the end of the day, we came home to this... under the tarps is a new subfloor. Yeah! Good thing, since we've already got 6" of snow and we've got another ~18 hours of storm to go!
Update: We got ~22" of snow. I hated it when it was coming down... but I'm starting to warm up to it. Its fun to throw it at Daddy. He hee.