Wonderful region indeed. Been there already a few times!
Where are you staying/heading?
Around Digne-les-Bains, there is a nice daytrip.
You start at the Dalle des ammonites, head up to the site of the Ichtyosaurus, drive on through the Clues de Barles, and the Clue de Verdaches.
If you take the risk, you can head to the small bird footprints, take a walk to the point of vue over the site of the vélodrome......
How long are you staying there? Surely not long enough to do it all?
Have a nice journey none the less!!