Big Thunder Mountain is an excellent roller coaster in Frontierland and one of the best attractions at Disneyland Paris. The minimum height to ride is 40 inches.
Disneyland Paris' Big Thunder Mountain is located in the middle of the Rivers of America, where Tom Sawyer Island would be at the three older "Magic Kingdom" theme parks.
You board Paris' Thunder on the mainland, then travel in a tunnel under the river before ascending the first lift for the ride. From there, Big Thunder runs much like its siblings around the world, except for the addition of another trip back through the tunnel to return to the mainland station.
The drop in elevation to get through the tunnel helps add speed to the ride, making this version of Thunder Mountain the longest and fastest in the world.