Slightly off topic, but those didn't look like conventional pyramid marks as the whizzed by in that video. Do you have any standing-still photos, if they were indeed something different?
Yes, those the the Four-Lake Club marks. They are roughly cylindrical with a center support post.
I've attached three frame-grabs from the video. Not great quality photos, but I think you can see the construction.
Cheers,
Geoff S.