Well, what I would mostly say is that whatever side of the debate you're on, 100 years is weather. Wanna show me planetary climate? Show me your 300,000 year dataset. In planetary timescales, we're barely emerging from the last ice age. This isn't the first instance of previous human activity being exposed by melting ice. Somehow the AGW crowd can only grasp the current melting, not the melting from 100 or 1000 years previous, that allowed the artifacts to be deposited there originally. But these are all micro-events compared to Milankovitch cycles.