This map shows 2.5 miles out of 12 within this speed zone, the railroad alignment through Mount Shasta City. Curve radius is given in meters. The tight S-curve, which has been shown by photos, is marked with two "291".

The underlying map is found on .
© Maps a la carte, Inc, used with permission.
The following link gives an overview over the whole speed zone. Navigation, magnification and resizing needs Javascript on that site.