Avalanche is a roller coaster in Congo at Kings Dominion. While it's not the best, it is also recommended. The minimum height to ride is 40 inches.
A Mack bobsled roller coaster (the only one of its type still operating in the US today).
Guests between 40 inches and 46 inches tall must be accompanied by a responsible person.
Ride it for the history lesson and not for the thrills. This coaster is almost quaint. Single-rider carts make for slow loading, so only ride if the line is quite short.