Thanks Joe and Max.
We had a blast, saw Mt Rushmore (at our own pace), found some mineral shops and met new people, got to ride the "1880 Train.....

Here's a panorama of one of the "pigtail" bridges...

DianeandthePigTail.jpg

They were designed by a local engineer some time back. The purpose was to do an altitude change in a short space and leave the scenery alone as much as possible, very cool IMO....