[@Gentlemanvaultboy] It is covered in a camouflaged blanket. Think how Frodo was able to use his cape to make himself look like a large rock in Lord of the Rings. I suppose to a very observant eye, it would seem off, like an odd shaped rock from the air. It is something modern armies would use to mask their equipment, so, I would say yes, it would be distinguishable to the especially observant.