The Runic Alchemist

Chapter 728: Building Connection To An Underwater Dungeon 2

It was large enough to house over 200 people at once, with two floors and five rooms, and a large living room for each floor, along with the basement.

A large circular cut was made in the basement floor, which Damian fitted with a meters-thick ring of condensed steel. Only one spell was engraved on it—an invisible box spell with no gap between the two walls at all. The shape was circular, like the steel ring. It was meant to work as a glass-like window to see beneath the ocean.

Along with that, Damian installed a simple steel pillar of the same size as the ring, which was around 60 cm in diameter. The pillar had the wormhole spell, the distance of which was set by Damian to open directly beside the abyssal pitch-black vertical opening of the dungeon underwater. The entrance of the wormhole would take the size of the translucent window he had made with the steel ring on the basement floor.

The steel pillar had a mana liquid tank and a lever for activation—the invisible box window was always active, also with a liquid mana tank. It didn’t need a lot of mana; the tank Damian had filled now should last at least 5–6 months.

The wormhole needed a direct path to work—only a third-ranker runesmith like Damian could etch a wormhole spell that could open so far using his own transcendent eyesight. Once he used the spell, it was recorded, but still needed a clear path to work.

He also put measures in place to seal the basement with a steel airlock to protect the wooden platform against flooding on the basement floor.

It was easy enough to use. One just had to pull the lever, and a wormhole connecting to the dungeon underwater would open up. The demons just had to jump in one by one.

Using the same four chains for support, Damian also built an underwater platform where the wormhole would open up and where the people coming out of the dungeon would land. This was not made of wood, though—Damian used a large, rectangular, door-sized, pure condensed steel cube with a liquid mana tank. The only spell on this one was also an invisible box spell, just sized 50 meters on all sides.

The invisible box would form above the cube, so there would be nothing inside the invisible box other than the dungeon entrance. Damian used wormholes to empty it completely of the water. The invisible box spell was connected to the mana tank by Damian’s mana threads—it was big enough to keep the spell powered for more than 7–8 months. The tank was also fixed in the water using the four chains. If it moved up and down a little with the water, the invisible box would not move along with it.

Still, the issue of having breathable air inside would persist. Damian had already installed the same pillar that opened a wormhole in a straight path. Its setting would open the wormhole right inside the basement from this place.

For the air, Damian had to make a new spell. It was simple enough—he just combined a wind rune with a wormhole spell. The spell used the specialty of wormholes, which had a very simple seal on their dark surface. In a wormhole, water or air did not pass through as long as they were not pushed in with minimum force. This principle was how Damian emptied the invisible box of the water contained inside.

The way wind runes worked was by pulling the air from one direction and propelling it forward. If the pulling side was placed outside the ocean, it would pull the air in. If the pulling side was placed inside the invisible box, it would pull all the air out of it.

Placing one such wind-wormhole at the left bottom and another at the right top, Damian received a decent airflow in the airtight invisible box. Damian placed the endpoint of both wind-wormholes outside the water surface. The mana needed was more this way, but he wouldn’t have to worry about water pressure. The intensity of pulling and extraction of air Damian set to medium so the air pressure wouldn’t build up inside the invisible box.

In the end, Damian also had to build a wooden protective cage all around the invisible box, leaving only the top clear—an invisible box was weak against outside damage. The water pressure or a simple fish wouldn’t be able to damage it, but a monster could possibly break it. It was a risk one would have to take. Damian had chosen only those dungeons for his first batch which were not leaking monsters into the water—the ones that were not yet 500 years old, which was the time for a normal dungeon to break and the monsters inside to come out. There were several such dungeons Damian had seen on his way to Malveria.

He had made notes of all the dungeons, along with the monster IDs, about their floor level, monsters surrounding them, and even whether he saw any monster breaking out or not.

All in all, a lot of liquid mana of his was being used up in all these runic tools, but it was still a much more efficient method for building a temporary dungeon point base instead of making one with steel pillars or an artificial island.

Damian repeated the process for ten more dungeons and then used a waygate to arrive outside the demon queen’s palace.

It was quite busy. The city below too was quite crowded. The outside area of the city had been temporarily made into a refugee camp. It was noisy and chaotic.

The demon queen was already flying toward him when he stepped out of the waygate. Damian’s wooden table was still there beneath the tree—he took a seat. He had just used flames to evaporate water from his body and had dressed into his spare outfit before coming here.

Lazrin soon came out of the palace and landed beside him, this time no guards were surrounding her. She had gestured for no soldier to come near while landing.

“Lord Keeper, it is a pleasure to see you again so soon.”

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