I have seen scapes like this in the past. I found one last year. I think the experts would call it a primary scrape. I'm sure it is visited by many deer. It's the only type of scrape I will hunt. I'm not suprised to hear that it's being used this time of year. I've seen deer poop in a lot of scrapes. Good luck hunting it.
oh, I think these "primary" scrapes get so big because a lot of deer use them.
BTW show us those pics!