Going up... not too bad...
... but going down???
Wheeeeeeeeeeee !!! Going down this is great!!!
Makes me seasick ...
... well, maybe not.
This is another one that is confusing to navigate.
Now this, I know I would get queasy.
This one looks like it should be musical
Neat.... but is it touching the ground?
I guess not. This is an engineering marvel.
Where is this one? I want to see this.