They found the island by its glow, well before the mana detector pointed the way.
It was well past midnight when they made landfall, leaving Terry at the boat.
"She has to be here," Kordia declared.
"How can you tell?" Kir asked. It wasn't the first island they'd searched with a mysterious glow, though to be fair the last island only glowed because of its lighthouse, which Kir didn't recognize as such due to the fact it sent a pillar of light straight up instead of horizontally. But there was no such structure here.
"I can feel it," she said. "Can't you?"
"I can see more mana in the air here... But aside from that... No wait... It almost feels like a dungeon," Kir said. Was his ability to interpret ambient mana warped by his time in a dungeon?
"This is nothing like a dungeon. We entered its domain a few measures back... How can you not feel it?"