The batpony looked around -- in addition to the two other members of her quaternion, there were a few scattered ponies swimming slowly back and forth in the hot and cold pools, or relaxing in the chaises, reading or dozing quietly. Every now and again, the wooden door of the sauna at the back opened with a squeak to allow one or two ponies to enter or leave those steamy premises, before springing back closed with a muffled 'bom.'