We had not been to the Dam for 20+ years, its still awesome. If we could still do work like that without all the red tape. Things have changed, parking $7.00 and 3 tours that cost more for each. When we went 20 years ago, they had to wait until they got 20 people together to begin the tour. Now its 80+ and hot. One thing that really bugged me, they have security (like the airport) which in itself is great, but I had no idea I would be tossing my money clip knife in the trash. Even the radio message they have does not mention what you can bring or not bring. I did have the option of hiking back to our car, 105 heat, tossed it instead.