Left-over stacks from a cement batch plant -- maybe?
There's an airport nearby, and all those hotels used a lot of concrete -- millions of cubic feet.
On Google Maps some joker labeled the stacks, or quite close nearby to those; Shooter's Perch.
Sounds fishy...I wonder when that name became attached, and who did that. Some comedian at Google saying "watch this! They want conspiracy theories? let's give them a piece of one --right here-- " ???
Shooters Perch. Interesting...