Jennifer frowned a little. "But didn't Channelwood have a map to it..." She quickly clapped her hands to her mouth, glancing worriedly at Achenar as she realized who she had just mentioned that Age in front of.
Achenar paused. "Yeah. I earned that nickname on my own... no collaboration with my brother on that one..." he murmured quietly. "You do have a point, but it's not a map like that one was. Let's just move on." He leaned up against the side of the round metal tunnel that lay just before them, blinking as one of the surrounding rings turned out to be composed entirely of flaps, which opened out with a squeak as Achenar jerked back from his place against the wall. "Oops."
Isaac quickly darted forward and examined the flaps, poking them a few times and watching them open and close. "Interesting. A pressure sensor, perhaps...?" He shook his head. "But why are all of them opening at the same time? And what are they there for?" He leaned closer, careful of the broken window. "I don't see anything attached... unless it's inside of those support struts..."
Jennifer blinked as she came up beside them. "Ooh, I wonder where this ladder goes..." She looked over. "You boys look on ahead if you want. I'm going to try and get a better look at things from up here." She smiled and quickly grabbed onto the ladder, working her way up.
Isaac stepped back from the window and nodded, rubbing his chin. "I still don't see what it's for..." He moved past Achenar and out the other side of the tunnel, the D'ni following behind. Outside, Isaac looked around a bit, watching the water moving underneath, and then tapped on the door. "This light's out too, huh? Odd..." He turned and went to the hatch, looking down into the water. "Hmm, a locked door and a flooded ladder. Maybe we shouldn't have come this way first..."
He trailed off as a loud rumbling noise started up, and looked up to see a long wall sliding into place, cutting off the platform mostly from the sea before them. Isaac looked down again, and blinked as the water began to drain away. "Hmm... I see..."
Jennifer came running up to them, hands over her ears. "It's so loud in there..." She pointed. "The flaps are catching the water... I guess we know what they're for now. And one of those symbols on the wall is lit up..."
Isaac stepped past her and tapped the light. "Not lit, though. I wonder what we have to do to get power to it..."
Achenar relaxed against the railing while Isaac and Jennifer climbed carefully down the ladder. He smiled a bit as he heard them fumbling with the crank, loud bangs heard each time they tried and failed to make it rise. Don't want to make the puzzles too easy on them, now do we? He gave the flaps a fond glance, remembering how he had never been able to solve this one. Until Sirrus came along, took one look at it, and solved the puzzle in the time it took to run the distance to the wheel and back.
A shout came up from down below, and Jennifer appeared at the hatch before taking off in a flash. Isaac appeared as well as the wall rumbled, narrowly missing getting caught as the hatch flooded again. "The flaps aren't just for catching the water, they're like the teeth on a gear!" he shouted, running past and poking the flaps again to close them. In a flash, he was back, and the wall was closing up again. "And down there is another set of slats... which means they're meant to mesh! But if one is turning, they can't mesh properly. I bet Atrus built a safety in..." His voice started to echo as he vanished into the hatch, Jennifer waiting now at the far end of the tunnel. With a rumble, the crank turned and rose into place, locking in properly at last. Jennifer beamed and quickly poked the flaps open again, causing Achenar to nearly fall as the platform beneath him began to rotate. "So!" Isaac declared, appearing again. "We had to raise the crank first..."
Jennifer ran up, and pointed at the lit lamp on the door. "And only then would the gears mesh and turn properly!"
Achenar chuckled and clapped, taking hold of the handle and pulling it firmly down. "Well reasoned. I had to use a lifeline on that one..." He made a motion with his hand as the door turned, moving deeper into the recess as if being screwed into something, and then sank into the ground, revealing a passage beyond. "So, then... shall we move on to the next puzzle?"