We have done two trips with Rossano into the Pollino.
As you go in a jeep you can get off-road and get to places that an ordinary car wouldn't reach.
They do a few different tours, I believe, including a longer one in the morning that goes further into the National Park and a shorter one in the afternoon that goes along (and through) the river in Orsomarso.
Rafting Calabria - Jeep Adventure
The rafting is another great way to see scenery you wouldn't otherwise see and I could highly recommend that, too!