The participants could see the large opening held by countless pillars that led underground from their current altitude.
Everyone figured that the underground ruins were probably very vast. This was the reason for the wide space within the barricades.
"Your secondary objective is to retrieve as many grand stones as you can," Gradier Xanatus stated.
"Huh?" The participants were confused by the sudden mention of a secondary objective and grand stones.
Before they could start throwing questions around, Gradier Xanatus began explaining.
The MBO had placed some energy shards called the grand stones inside the Caskia Ruins before the participants arrived.
The ruins no longer had any energy crystals inside, so they had to put these ones in manually.
Gradier Xanatus explained that the participants were to gather as many as they could while trying to survive.
Gathering these shards would also increase their points.