Access to the pool is via stairs.
There is a picnic area near the Pinalo campsite.
The price for parking the car (in 2013) was € 3 a day.
In my opinion there are no particular dangers, just don't be stupid.
Swim to be good, not to get first!
Visited in 2013
Pozo Pigalo is about two hours away from Zaragoza.
Take the A-126 to Tauste, the A-127 to Sadaba and the A-1202 to Luesia.
About a kilometer before Luesia, follow the signs for the Pigalo campsite.