This is not an easy place to get to but I did not regret the effort to get here. If you have your own car, then you can drive here on your way between other parts of Patagonia. For me, I found a tour operator that stopped here between Puerto Madryn and El Calafate (two other WHS).
The caves here are incredible and it's likely you'll almost have the place to yourself. The hand paintings are really vivid and you can get quite close to them.