... no one knows exactly what.

Eerily similar to real life images of shrinking bodies of water like the Aral sea, here what looks to be an aircraft carrier or some other kind of ship, stranded in a desert.

The tire tracks in the foreground look fairly closely spaced, perhaps indicating a small vehicle like a Mongoose-style ATV rather than a Warthog-like jeep. So far we've only been shown the hoverbike-style Pike and a couple of small spacecraft, but it just wouldn't feel like a modern Bungie game without a couple of traditional wheeled vehicles to tool around in.