The Limestone Cavern (CSC)

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==Origin==
High in the mountains there rests a gentle valley. All in all, it is a peaceful place. At its heart is a broad river, formed by a number of lesser streams which trickle down from the snow covered caps above the valley. As with all rivers, this one naturally began to flow toward the equator and sea level.
It was thwarted in its journey, however, by the towering walls of the mountains which ringed the valley. As the years passed, however, the river slowly carved its way through the mountain. After centuries of effort, it broke through the other side and plunged over a grand precipice into the foothills beyond the mountain range. In its wake, however, it left a network of twisting and treacherous tunnels for adventurers to contend with.
==Transformation==
Unlike surface structures which need to be turned into underground complexes before being used as dungeons, the limestone cavern can be used 'as is" for any dungeon based campaign.
==Map Key==
1. Entrance: This chamber is notable for its high, arched ceiling and the numerous stalactites which dangle from it. The walls have all been worn smooth through ages of natural erosion by the river. A thin band of shore (about 1 yard wide) runs along each side of the water, making walking possible, but very difficult. The water runs very quickly through this region, but can still be navigated by a raft or boat.
2. Upper Lake: A secondary stream curves around from the main river to form a large lake in this room. The ceiling is a high, domed affair with a number of stalactites visible on it. A wide shore surrounds the lake which has a slight whirlpool visible in its currents. The whirlpool is not so swift as to be hazardous to boats, but swimmers may be at risk.
3. Lower Lake: A slender cascade of water pours from a series of fissures in the ceiling of this cavern to form a broad lake. A number of natural stone pillars provide support for this chamber and the walls glisten with mineral deposits. A fast moving stream flows into the lake through a fairly wide passage while a second stream flows away from the pool down a fairly wide tunnel.
4. Grotto: This is a region where the cavern around a length of stream has been widened by natural erosion to form a large chamber. Stalagmites and stalactites are common and the entire area glistens and sparkles with mineral deposits.
5. Upper Cascade: At this point, the river enters the top level of long atrium and plunges over a sheer cliff. The roaring of the cascade is intense, and the natural acoustics of the cavern carry the vibrations throughout the area. The river turns into dangerous rapids before it topples over the cliffs and into the darkness below. There is a great deal of shore area atop the waterfall and enough space in the cavern that it might be possible to climb down beside the waterfall, although this is certainly risky.
6. Dead Pool: A slow moving stream feeds this pond which has little, if any, current in it. Because of the natural environment of the cave, however, the water has not become stagnant as it would in a swamp. Thus, although it is unmoving, it has remained fairly fresh.
7. Balcony: The atrium around the cascade widens at this point, producing a natural balcony around the waterfall. Explorers might reach this region by climbing to it from below or above. It is possible to climb down or up from this area, but the presence of the cascade makes it dangerous to do so.
8. Upper Pool: This region is much like the upper lake, but the waterway which feeds it is much less intense. A small pool has formed here which empties through a split in the rock underneath it. A minor whirlpool swirls these waters, but it is dangerous only to swimmers.
9 Lower Pool: The water which falls from the upper pool pours into this room through a split in the ceiling. In addition, a slow moving stream enters on one side of the pool and exits on the other. A minor creek, almost a trickle, flows away to form two large dead pools.
10. Great Pool: Although a minor stream flows into this chamber, carrying a fair amount of water to the great pool, the majority of it comes from the grand cascade. Pouring down through a wide chimney which stretches out of sight overhead is a gigantic waterfall. It thunders down from high above to form this great body of water. The entire chamber vibrates with its intensity. The water roars out two exits to plunge over a sheer cliff face and vanish into the mists of the valley below.