The best way to reach the Tiger Fern trail is to take the bus from Dangriga or Belize to the Maya Center village. From there it is a 5 miles walk to the reserve headquarters. If you are in Hopkins, there are some reliable taxi service that could take you to Cockscomb. You can also hire a tour operator or rent a car and drive there yourself.
Shower falls
The Shower Falls are a 10 minute drive away from San Ignacio, and about a mile off of Cristo Rey