 So I'm standing next to a big chunk of ice that's been lifted up out of the ocean and piled on top of the other ice that I'm standing on. And I can look at it and I can see how thick that piece of ice was when it got pushed up, and it looks about feet thick to me. And because we know from looking at satellite data, and I know from the ice around us, that this was pushed up into this region pretty early in the year, like October and November. So for it to have been this thick in October and November tells me that this is at least last year's ice. So this ice is more than one year old, we call it second year, multi-erase if it's older than that. And this is kind of what we're building the camp on. It's good, thick, strong sea ice that helps keep the camp intact.