Back in the giant-tree jungle. A chest with gravel in it, a redstone lamp that might be a trap, an emerald by the iron, and a pit with an emerald block that makes no sense.
Basket drops a tower floor by one block, flips the stairs to widen the towers inside, settles on one arrow slit layout, and studies the back of the keep from afar.
Breakfast talk, an iron block for the monument, and a jungle full of spawners. Basket gets blown up, they regroup at the jungle villa and climb the big tree.
Basket walls in the big bedrooms near the top of the keep, plans a hidden layer where the secret tunnels can meet, and lowers the stairwell roof to line up with a stone top.
Basket adds doors around the keep, gives the dining hall its first glass pane windows, lights the kitchen from up high, and lays a new floor at the top of the keep.