Mystara: Hollow World

   Based within Dungeons & Dragons Mystara's Campaign Setting, the Hollow World is a place where ancient civilization have been preserved. The Immortal Ka created the whole world as a refuge from creatures that began to disappear from the surface of the world. As more and more things changed on the surface, Ka and others decided that cultures needed to be preserved as well besides disappearing animal species. Soon various cultures appeared in the Hollow World. Most are unaware of the transition and exists in a perpetual state of cultural stagnation, they are at the peak of the civilization but are unable to advance or adapt concepts that never known to them. Sadly a few culture like that of Blackmoor were unable to be saved. Much is this is do to the Spell of Preservation cast on the interior of the world. Although new civilization have been added, any interaction within another cultures is usually met with hostility. Those that have traded have been compelled to trade item that they would use in their culture. New things can be introduced from another society, but will always be considered a novelty at best and never integrated into the culture. However these civilization are threatened by invaders from the surface world from time to time. Shadow Elves and others that have found their way in have wreak havoc on some of the preserved nations..

The various civilization known to dwell with the Hollow World are:
 -Brute-Men
-Nethar
-Oltec
-Azcan
-Blacklore Elves
-Beastman
-Kogolor Dwarves
-Antalian
-Jennites
-Tanagoro
-Traldar
-Makia
-Nithia
-Krugel Orcs
-Milnians
-Kubbits
-Flamaeker Gnomes of Serrainne
-Sind
-Soderfjord Gnomes
-Hin
-Ierendi Pirates

   The Hollow Worlld of Mystara can be entered from various caverns found throughout Mystara. However there are two large openings at the northern and southern poles. Both poles are covered by an area of thick heavy fog. The oceans and seas of Mystara and the Hollow World are connected, thus many underwater creatures and civilization will be familiar. The Spell of Preservation though keeps these underwater civilization from changing too. The Hollow Earth is lit by the core of Mystara, a large ball of reddish plasma which illuminates the world in a perpetual state of none. A series of land masses orbit the core, and provide brief period of darkness for section of the inner surface. Fortunately the weather system is very similar to the surface world, as clouds form and provide some relief from the constant daylight. Some of land masses that orbit around the core are also inhabited by a few civilization as well.



   The greatest secret of the Hollow World is a massive library known as the Lighthouse. The area of the Lighthouse is an exception to the effects of the Spell of Preservation in the sense that, it is place were knowledge is accumulated and can be exchanged freely. It contains a collection of nearly all mortal knowledge from various points of history and cultures. Individual scholars journey here to contribute the vast library and study from it..

Dangerous Journeys' Mythus: Inner Aerth

   Dangerous Journey's Mythus Campaign setting was created by Gary Gygax. The campaign for the "Epic of Aerth" focuses most on the surface world. However Aerth, unlike it's counterparts, is a hollow planet.
The surface of Aerth is only 1,000 miles deep,and two major openings can be found at the northern and southern poles.Aerth's outer and inner oceans though do not connect, for Inner Aerth all the land masses we know on the surface are oceans, and all the known surface oceans are landmasses. The Artic Sea on the surface hits the polar ice sheet Of Inner Aerth. In the middle of the continent of Antartica, the polar ice sheet of Inner Aerth meet.

  Access to Inner Aerth can be found throughout the world through deep cave systems, but it from deep underwater or through Aerth. The Interior is light by a small sun or the planet's core which seems to be free floating. This means that Inner Aerth knows no night, perhaps except at the poles which at best may have some twilight. Fortunately Inner Aerth is frequented by much precipitation, cloud systems generate at the pole and produce storms and weather patterns. What shade comes from these systems, bringing some change to the constant noon time illumination.

   From those explorers who have returned from Inner Aerth, we know that much of the world is populated by animals of a bygone era. The northern and southern polar areas, familiar mammals can be found. In addition, several extinct surface species can be found here as well. Ranging from the great saber-tooth cats to the Wholly Mammoths. The equatorial regions contain even stranger creatures, which have been identified at best by some Heka practitioners.These creatures are giant reptiles, called Dinosaurs, from four ancient time period of the past. In addition to these reptiles there are also a number of giant insects as well one should be aware of. The seas likewise contain manner such dangers from these time periods as well.

   It also has been reported that there are a few intelligent races here. Three of these races resemble hairy humans, and have erie similarities to the northern barbarian peoples Azir and Aerope. These two are known as Cro-Magon and Neanderthals. The third race is called Pithicanthopiod, which resemble the orange hairy men of the tree of the islands of South East Azir The last race is nonhuman and dubbed Theriopodid. These individuals have been observed to live in the mountainous regions of the equatorial Inner Aerth. They resemble humanoid reptiles, very similar to the dinosaurs in coloration.