Probably the only (mostly) undiscovered little "gem" (hidden area) is the Eureka Mine/Ore area. It lies on the path around the Grizzly Rapids and basically is a big circle. There is no other rides along the path, and as such, most people don't go through it. Plus you have to avoid the water from the lift hill for the ride when you are walking down the path. I have more pics from that area, and I'll get around to posting them sometime soon!
Re: Eureka Ore Chute Main Building Here's the entrance with the old ACDSee Pro age applied sepia tone...I should try Nfine's filter while I still have the free trial...