Lume rock

Lume rocks were very unusual rocks that gave off heat and light, but were not great enough to burn an individual's hand.

B'omarr Monks used them to line pathways for their younger monks to walk over, giving them the confidence that they could walk over a bed of hot colds. Though deceptive, this technique helped filter out monks and give those that succeeded a much greater sense of accomplishment.

Appearances

 * Galaxy of Fear: The Brain Spiders