The decision of adding a fourth floor was a decision that was more important than the other times a new addition was possible. This was an important decision because if she decided to go through with accepting the floor at this time, then Amy would need to quickly create, populate, and make defences for the floor. Though the floor increase could also start attracting more dangerous trench monsters.

If she did not accept the floor right now, then she would have fewer barriers and defences in place to protect her from whatever came from the trench or the reef.

After thinking and weighing the negatives and positives of each action, Amy decided to accept. With the additional floor, she at least would have a bit of time where she was entirely protected, and nothing could pass through it. In addition, that would give Amy time to be able to create the floor and make it more dangerous and protective for her core.

With her decision made, Amy accepted the new floor.

Floor installation will begin in:

Three

Two

One

As the floor installation began, the regular pains and attributes that came with the installation started happening. However, unlike the previous times when the floor installation happened, Amy ignored it. Instead, what she paid attention to was the mana circulation within her dungeon and territory.

She never noticed it before as she was too busy watching the floor changes within the dungeon, but now Amy found that the amount of mana that flowed out of her dungeon into her territory had started increasing. It was not a large enough amount that she would notice unless she saw it happening. But it did concern her that it would attract new monsters to try to invade the dungeon, and who knows how much the mana levels will increase when she completes and opens up the fourth floor.

However, Amy knew that she would have to deal with the problems as they came and not dwell on the possibilities of it happening when she could not control them.

As soon as the new floor installation was complete, Amy started working on it.

When Amy looked over the new floor, she noticed a trend with her dungeon's floors. This trend was that each floor gained 100 metres in each cardinal direction and 25 metres up and down from her core. She had known that as she gained floors, the water level would keep on increasing and increasing, and while she may want to change its height in the future, but right now, she was happy with the 125 metres of saltwater that she had.

For this floor, Amy decided to create two main sections that would be separated by a coral reef barrier. The first section would be an ode to the trench that occupied the outer half of the floor. This section would be filled with what she collected from the trench and shaped with trench mana to mimic that environment. Though she had not seen the trench itself, she figured that she could somewhat mimic the environment.

The second main environment would be a mangrove swamp that would inhabit the inner portion of the floor. Though it would not be like an actual swamp and more like a wetland, it would be an area where the water level would be around one metre, give or take. One of the things that she wanted for this section of the floor would be a tide, but that was something that she would have to figure out later.

Between these sections would be a larger but thin coral reef. This reef would essentially be a block that would require some thinking to get around. If something invaded and reached the fourth floor, Amy wanted to be sure that it wasn't just a straight shot to her core. If anything, the reef would essentially be a wall that would make it harder for invaders or adventurers to get to her core.

With her ideas in place, Amy started carving out the base structures of the environments.

The trench environment would have the deepest parts of the floor, but it would not just be flat. She wanted to create something like an underwater mountain range that would add character to this environment to give a chance for some of the more grounded trench monsters that she had to be able to fight.

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With some work and duplicating the sand, Amy created a series of slopes, inclines, and plateaus to fill the outer half of the fourth floor. Then, right at the edge of the trench territory, where the inner portion of the mangrove swamp begins, she brought the sand bed up 75 metres. This would allow her to build the coral reef barrier to be around 50 metres in height and 20 metres in length that would be in a perfect circle.

After the barrier area was marked out and raised, Amy continued to raise the sand level within the mangrove swamp. She raised it so that the deepest part would be around two metres, while the shallowest part would be 50 centimetres. But right in the middle of the swamp was the reef surrounding her core.

Amy hasn't really done much with the core reef except grow it to match the new water depth. Nor has she done anything to the sodden salamander guarding her core, which she should be doing, but it really never crossed her mind.

The core reef was worked into the swamp by having the swamp end at a sand cliff that dropped off entirely to the floor's original sand height. This happened about two metres before the start of the reef. She knew that she was going to work and make it a lot stronger and more dangerous, but that would be later when she had more time.

When the base for all of the environments and things she wanted to place on the floor was complete, Amy started trying to pull back the water with threads of water mana. She continued doing this for what felt like an hour before the water started following the mana threads when she pulled.

After spending a bit more time pushing and pulling the mana threads, a blue screen popped up.

Would you like to set up a tide feature on the fourth floor?

Yes, said Amy mentally.

When she agreed, another blue screen popped up.

Choose the boundary and set the time for the tide to occur.

When the blue screen popped up, the information on formatting and creating tides flowed into her core. With this new information, Amy started creating the tides for the floor. The tides would start from the sand cliff around the core reef, all the way to the edge a couple of metres away from where she will grow the coral reef wall.

Amy made the tide go around the swamp with her mana strings from section to section, like a clock. So if the tide was shallow on the northeast side, then it would be the deepest on the southwest side. This would continue for three hours before it shifted.

When she was finished, Amy took a step back and watched as the water came and receded from one area to another. She was quite happy with the results and could not wait to see it when the environment was fully furnished.

POV Duna Valsson

For five days, the town has been weathering the storm. It was not uncommon to have storms in the Ponosonee ocean, and they were prepared for it when the storm hit. All operations outside of the weather and monster barriers were halted. Access to the dungeon was also officially stopped until the storm let up.

While the storm was not bad inside the town, it was quite harsh outside, and Duna was concerned for the dungeon. It was a floating dungeon, and the winds and waves were large enough that it could have been pushed or dragged somewhere else. That was all that she needed at this point. The town was just getting situated, and if the dungeon moved with the storm, it could have been pushed kilometres away.

As the storm let up, Duna and a couple of sailors rowed out to the edge of the barrier with binoculars to see if the dungeon was still in the same place.

It was not.

Duna got the group to row back to town and started on the paperwork with a sigh.

The paperwork was something that was specially created for this dungeon. She had to fill it out every time the dungeon moved or settled somewhere else, and it gave her a reason to somewhat dislike the dungeon.

Duna thought anything that spawned more paperwork was worth a bit of dislike, as paperwork was the demon who never left. Not a lot of people liked paperwork, and those that did, well, were not natural.

Though her views were somewhat unique, she still did the paperwork. It was part of her job as guild master, after all.

After finishing the paperwork, Duna made a quest in which different groups or individuals could take to find where the iceberg ended up. When she put it up on the quest board, the adventurers in the guildhall showed immediate interest in it.

Soon, the storm broke, and the adventurers who took the quest set off.

It was only about 30 minutes when an individual who took the quest returned and reported the location to one of the guild secretaries.

When two more reports of the iceberg being in the exact location that the individual reported, the male receptionist, Jackson, reported the location to her.

"Guild master, we have reports stating that the dungeon has moved into the Amware reef, right next to the dead trench."

As soon as Duna heard this, she closed her eyes and groaned. It just had to be in a location where mana burns almost always happened.