The Ruins of the Ancients
Ruins of the Ancients litter Malatra, Most are innocuous, but many are dangerous for various reasons. New ruins that are found should always be treated as if they are taboo, unless some tribe can tell characters otherwise. The largest number of ruins is undoubtedly within the Jungle of Lost Tribes, but other concentrations of structures can be found elsewhere as well.
One such ruin found beneath the ground near Fire Mountain was called the Tower of Order, where they were known to study the effects of time. One group of heroes who explored this ruin nearly got themselves killed or worse exploring the ruin. Bengoukee was not happy with them. See A Stitch in Time for more information.