That big boat ride is Jungle Splash. I could only find
this POV for it (you may need to turn the volume down :P ) but
this off-ride video shows you most of it.
Click here and you'll see that the boat does indeed sits on a lift and gets pulled up to the top before being pushed forward down the drop. It looks pretty good.
But it seems like they have another smaller flume ride as well. It's called
Dragon River:
2012 will see a another new attraction in the park. "Dragon River", a themed family flume ride by Hafema.
Etnaland latest attraction is thought for those how want to share a new adventure with the whole family. Is with this object in mind that the “Dragon River”, a family flume ride, has been installed in co-operation with Hafema from Germany.
The 300 meters ride, themed by the Spanish Arte Insitu, has two six meters drops.
So they have two flumes, rapids, a Mack mega, an S&S mine train, a stand-up skyride... cage.... thing. :P What else is there?