Subterranean tunnels of the Labenda Swamp

The Subterranean Tunnels of The Labenda Swamp was a network of underwater passage with occasionally a chamber with air that was used by merrows in the Labenda Swamp.

Safe House Entrance
Inside of the gentleman’s safe house was hole leading to the tunnels. The hole had chunks of rock and dirt as well as a very interwoven network of roots coming down from the tree, so it was fairly easy to climb down. There was a little bit of cold swamp water running down the tunnel. It was about three feet wide in most places and there were claw marks where it had been dug out.

First chamber
This chamber was kidney shaped it had a ten-foot high ceiling and a natural gravel and sand floor. There were a few outcropping walls and in the center was a small pool. The pool had brackish and thick water with on the bottom four discarded humanoid skeletons. On the other side of the kidney there was a ten square feet side pool that hid a tunnel that connected the first and the second chamber. Beside the pool there were a couple thing laying on the ground:
 * A bunch of empty partially destroyed crates,
 * Torn apart crocodile corpses,
 * 250 gold worth of jewelry,
 * 185 gold, 210 silver pieces, and 65 copper was
 * Four sets of manacles laying,
 * Two vials with thick oily purple substance,
 * A number of broken vials.
 * A well-crafted magical marble bowl of gold inlay with a curious design. The edges of the bowl shift into equally separated five dragon heads, and each dragon had eyes of tiny gemstones. One set rubies, one set emeralds, one set sapphires, and one set diamond. It was used as a communion device. When granted with enough blood and given the proper ritual, it was used to acquire auguries, divination, and communication across the Divine Gate with the Scaled Tyrant.

The Tunnel
The entrance of the tunnel was 5 by 10 feet and was used to travel between the chambers. The tunnel was 15 feet high with a layer of sediment on the bottom. The tunnel curves below and evens out and goes further for about 30-40 feet before it opens up into a 20-foot pool in the second chamber.

Second Chamber
This chamber was mostly build out of natural rock, but there were elements of it that looked like it was once an old mason architecture. On the edges of the chamber were actual stones stacked. Walls that have seemingly been partial reclaimed through the ages. There were two large central pillars where stalactite and stalagmite met eventually and created a structure in the center. There was a big pool in the middle with a weird set of stairs that step up to a platform on the side, and a small pool in the north of the camber were a underwater tunnel was located.

The Large Pool
A large portion of the floor was just submerged in water, and different paths and avenues of it curved off and vanish and opened up to other tunnels beneath.

The Platform
On the platform was an oblong rock formation and boxes, crates, and piles of things gathered around it that looked to be:
 * Scattered bits of gold and silver and copper that have just been lost amongst the steps, some of them covered in dirt or mud,
 * Broken pieces of nice, polished pottery with a nice glaze,
 * Piles of things that have been pulled out and placed near the top of the stair,
 * Remnants of crates and broken goods, littered across the rough staircase,
 * A bunch of fine silverware partially packed with mud, sand, and grime,
 * A partially open crate,
 * A cache of weapons that were bound in clusters with leather straps around them. Part of this cache were:
 * Four well-made longswords,
 * Four well-made short swords,
 * Two battleaxes,
 * Two halberds,
 * A locked, dark wood case, about four feet across and a foot wide, that was closed and latched,
 * When the latch was opened a blade fired out from where the lock was. Inside, there was a beautiful jewel-inlaid, curved pure gold color blade. That bent with the movement before flicking back into place. It was pretty well-balanced, and lighter than expected.
 * A foot and a half by a foot and a half flat locked iron box. With a simple, a steel, iron look to it,

The Rock Formation The oblong rock formation was about a six to ten foot at different places. It had a pool of water were mist was rising and sifting from it, which was loosely drifting off of the surface of the water. Around the edges of it, there were dozens of metallic objects with symbols of deities that were outlawed by the Empire of different shapes and configurations and designs. A number of those were scattered about, some in disrepair, with actual pieces of dried barley and other grains around it. There were symbols of and worship idols from:
 * The Archeart,
 * The Changebringer, Avandra,
 * The Moonweaver, with the two crest moons across the silver cross,
 * The Wildmother, Melora, with the hook and the wreath,
 * The Stormlord, Kord.
 * The Everlight,
 * The Lord of the Hells, Asmodeus, that had a dark horned crown,
 * The Strife Emperor, Bane, the deity of conquest. With a series of chains and shackles that are across what looks to be almost a coffin-like box,
 * The Scaled Tyrant, Tiamat. With the clawed hand,
 * The Traveler.

The Small Pool
Beside the small entrance pool there were small mounds of various minerals that had long dripped from the ceiling from condensation and various water flows that have come through this interior cavern and built a hard, rocky platform that's emerging just outside of where the pool ends.