Also termed a cella caldaria, or cella coctilium, this was the room of the dry wood (for burning). This was the hottest room in the regular sequence of bathing rooms. When one had got used to the temperature of the tepidarium, one went from there to the caldarium. This was a very hot and steamy room with the floor heated by the hypocaust. In the ca…... Found on http://www.encyclo.co.uk/visitor-contributions.php