http://breezewiki.bunny5exbgbp4sqe2h2rfq2brgrx3dhohdweonepzwfgumfyygb35wyd.onion/crosscode/wiki/Ku'lero_Temple
Climb up the steps and jump onto the Southeast pillar to your left. Either way, use Wave to reach the Northwest pillar, then jump West and walk North to press the switch. Walk North through the small passage into Outlook, then walk West to Longleg Vale, use Wave to continue going West until you reach the end of the room, then walk North and continue following the Wave path until you can go North to Crystal Den.