If you are at Yellowstone,
Crazy Horse Memorial and
Mount Rushmore are not much further. At Mt St Helens, the Ape caves are worth visiting if you have the time. They are old lava tubes. I've only done the easy lower tube. Take LED Minors lights and flashlights for everyone.
The Olympics have the
Sol Duc Hot Springs. Also check out the
Elwa Dam Removal. For a day off consider the
Great Wolf Lodge. Great Wolf Lodge is alot cheaper if booked well in advance. They have done Groupon in the past. They also email coupon dates occasionally.
