The Sea of Stars, though located within the planet, actually existed in another dimension. If humans tried to excavate it, they would have no way to touch that dimension. Only Albion could accomplish such a thing.
It was rather interesting. Even with highly advanced technology capable of reaching space and even traveling to other planets, humanity still did not understand many things about its own world, such as what lay at the planet's core or in the deepest parts of the ocean. Even the technology of the Marvel Universe had not achieved that.
"Sorry, but I can only appear in this form for now."
"There was a Spirit Tomb in Pan-Human History as well?" Mash and Ritsuka were somewhat surprised that Merlin had appeared in Fou's form, but they quickly accepted it. Ritsuka then immediately became curious about the Spirit Tomb of Pan-Human History. She had already learned of Albion's origins, but she knew nothing about Spiritual Tomb Albion deep beneath the Clock Tower in Pan-Human History. Mash did not know either.
Even within the Clock Tower, Spiritual Tomb Albion was information known only to a small number of Magicians.
"Of course. Though in Pan-Human History, it isn't called a Spirit Cavern. It should be called a Spirit Tomb. Pan-Human History's Spiritual Tomb Albion becomes impassable eighty kilometers underground, because the world beyond that point is known as the Fae Domain. It is a world humans cannot enter.
"On this side, however, there is no restriction from the Fae Domain, because Britain Lostbelt itself is what is called the Fae Domain. Naturally, we can keep descending. In terms of actual distance, we need to travel more than four hundred kilometers underground, reaching a depth of 2,700 kilometers. That is your destination: the Sea of Stars."
"Hey, hey, we're at eighty