Viper is a well-known downhill trail named after a roller coaster at Magic Mountain. The name is appropriate as the ride kinda feels like a roller coaster ride with all the ups and downs and twists and turns. The trail is very fast (20 mph+ in most sections) and includes two short very steep, loose rock, rutted sections that are tricky yet very rideable. If you are a less experienced rider you may need to dismount these 2 sections. If you're an experienced aggressive rider you'll absolutely bomb this trail and have fun doing it. Its quite the thrill.