Thanks, Liolel. Your comment about my post in general prompted me to write some more in here. So here goes.
Journeying back into the accursed tomb, the party uses their knowledge of the existing layout to navigate back to where they left from. Nytor casts Hide From Undead, and the party moves through skeleton room. Down a flight past all the empty sarcophagi from the mummy chamber. Then through the chapel room, and up two flights of stairs. With spell still active, the party moves through the second skeleton room, and near the stairs that are submerged in ocean water. Nytor casts a Water Breathing spell and the party moves into the murky depths below.
This time, the party takes a moment to search through the sarcophagi of this chamber. Using his inate magical detection abilities, Ivo discovers a strange amulet that glows to his keen eyes. The amulet is a small onyx stone inset into a silver circle. In the onyx is a pair of silver hands together in a prayer position. Ivo holds onto the trinket, thinking it best to have it identified before wearing it.
The party then moves through the library below this room, and several of the players glance periodically at the titles of the books as they swim past them. The books are all of various shapes and sizes, and what spines are legible are written in Draconic. A set of stairs leading upwards are found on the far side of the room, and the party moves upwards, up two flights, finally emerging from the water.
"Whew!", Rath states, "I'm glad that this entire dungeon isn't flooded."
Ivo pauses, and uses his dwarven instincts to his advantage. "This seems right. This feels like sea level to me. These stairs come up to about sea level. It must be that just that section is flooded."
Moving into the room, the party is quickly dumbounded to see numerous odd trinkets on shelve that line the walls. Tables and tables fill this entire room, and each is covered in what appears to be junk, for lack of a better word. Artisans tools, woodworker tools, spices, bowls, pottery, musical instruments, toys, all of crude manufacturer, many of them bronze. Like a giant garage sale, shelf after shelf, and table after table all displaying - stuff. In the center, a large "C"-shaped black onyx structure sits before an empty obsidian table. "Curious", Bax admits, casting a Detect Magic spell into the room. "Interesting. I'm getting huge Illusion and some divination magic coming from this structure. Nothing else in the room is magical."
Going on a hunch, Nytor takes a crude tool off a table, and places it on the empty table in from of the C-shaped structure. Instantly, the inner-surface of the structure comes to life as a crystal clear vision of a lizardman working with the tool is displayed. The voice of a narrator can be heard, in Draconic, speaking about the tool. "It's saying how to use the tool; what it does; how it works. It's like an encyclopedia entry for that item.", Rath translates, as the lizardman moves in the image. "Try another one", Dzintra urges.
"A toy, this time", Nytor says, finding a small little boat, and placing it on the table after removing the tool. Again, an image comes to life of a boy playing with the boat. The scene is short. "Fascinating", Rath says, "Valgo would love this place. It's like a huge museum to their culture." Bax ponders out loud, "this is a truly fascinating culture. I guess they knew they were going to die, so they recorded all of their knowledge with this device." "It would seem that way, but we can always come back to it.", Mournax insists. "Agreed", replies Bax.
Moving down the stairs once more, the party emerges in a room that feels like a sauna. The walls and floor glisten with moisture, and a huge pool with a slight trickle of steam dominates their field of vision. Steps lead up to the pool in front of them, and several ornate fountains, in oceanographic decorum constantly stream a small line of water into the pool. "It's warm!", Mournax exclaims, placing his hand in the water. "And it's fresh water", Nytor says, taking a small sip, "and tasty". "This would be that source of fresh water that the divination said that we would find", Rath says. "We can use this water to clean the salt water from our armor and weapons", Ivo says. Mournax climbs into the pool of water. "It's very refreshing", he says, lounging against the side.
With nothing of further, obvious interest, the party continues onwards, down another flight of steps.