The northerners, who are more powerful than the humans on the Laurentian continent, were able to remove the earth and stones in a short time.
There was a tunnel entrance covered with a rusty iron plate.
Naturally, the group tried to remove the lid.
"Oh, this is the entrance to the old mine after all.
"I'd like to check inside, but I'd probably ...... run out of oxygen. ...... Momoko, can you help?"
Naturally this is where Momoko comes in.
"Yes, I'll take care of it."
Since the area has been closed for a long time, it is unlikely that dangerous creatures are here.
Instead, it is more likely to be filled with flammable gases or gases that are harmful to the human body.
Momoko therefore turns on the magic light and begins to investigate the old mine.
<
Infrared light alone would have missed some details.
>.
Momoko reports using the manaphone on her backpack instead of the built-in manacam.
"I see. Be careful on your way."
.
Momoko then proceeds cautiously.
The tunnel is so solid that it is hard to believe that it is more than 700 years old.
<
It is a proof that the workers of that time did not cut corners and did a solid job.
Momoko slowly descends down the tunnel, which extends diagonally downward.
Momoko reported.
"Has it been denatured by geothermal heat?"
<
"Go carefully."
.
is a unique mineral that is formed when limestone reacts with magma, and is an aggregate of < minerals, mainly composed of calcium and silicon.
On the earth, < are such minerals.
And here on Ars: .......
<<>.
It seems that magi crystals have been mined.
"What are its size and properties?"
<
"Good. A little further."
Momoko continues to go deeper.
The next thing she finds is .......
>
"I see. Collect them and continue on your way."
<
Pyrite is a compound of sulfur and iron, phlogopite is a compound of sulfur and lead, sphalerite is a compound of sulfur and zinc, and pyrite is a compound of sulfur and copper.
All of them can be found in skarn deposits.
"It looks like it must have been a former mine site," Rhodes said.
Rhodes says, and the engineer, Archista of the , agrees.
"What about the air composition?"
"I see."
Methane and ethane are both combustible gases. However, if there is no oxygen, there is almost no danger of ignition.
The tunnel, which had been a straight road up to this point, was now divided into three separate tunnels.