Pronounced Pawn-say ;-)
It is an Ecoparque river, about 30 minutes by car from Cali. You can sun on boulders and rocks (we don't have rocks like that here in FL) and bathe in the icy cold current and cascades, all the while surrounded by hills and trees. The view of mountains to the north doesn't hurt, either.
Alejandra has pictures on her cell phone... When she sends them to me, I will show you. Pance rocks.