when you play the safari game at the end part of the first page there are bush like things push your boat into them you climb up them and then you can drive your boat into the small body of water on the to p you can also go on the evtrence of the game you can really go anywear you want that is on the first screen!

http://img391.**************/my.php?image=bug21de.png

sorry, but its not related to the cliff, and plenty of drive boats on land topics have been posted already

doesn't make it any less cool though! still havn't achieved it...