diff --git a/df_caverns/underworld.lua b/df_caverns/underworld.lua
index 18d65b9..c0708c4 100644
--- a/df_caverns/underworld.lua
+++ b/df_caverns/underworld.lua
@@ -399,8 +399,8 @@ minetest.register_on_generated(function(minp, maxp, seed)
 		end
 	end
 	
-	-- puzzle shaft
-	local puzzle_init = nil	
+	-- puzzle seal
+	local puzzle_seal = nil	
 	if pit_uninitialized and minp.x == shaft.location.x and minp.z == shaft.location.z then
 		local index2d = mapgen_helper.index2d(emin, emax, minp.x + 3, minp.z + 3)
 		local abs_cave = math.abs(nvals_cave[index2d]) -- range is from 0 to approximately 2, with 0 being connected and 2s being islands
@@ -408,20 +408,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
 			
 		local floor_height =  math.floor(abs_cave * floor_mult + median + floor_displace + wave)
 		local underside_height = math.floor(y_min + math.abs(wave) / 5)
-		
-		local shaftwallmin = {x=minp.x, y=math.max(underside_height-3, minp.y), z=minp.z}
-		local shaftwallmax = {x=minp.x+4, y=math.min(floor_height, maxp.y), z=minp.z+4}
-	
-		for wall_vi in area:iterp(shaftwallmin, shaftwallmax) do
-			data[wall_vi] = c_slade_block
-		end
-		
-		local puzzle_seal_y = floor_height
-		if puzzle_seal_y < maxp.y and puzzle_seal_y > minp.y then
-			for seal_vi in area:iter(minp.x+1, puzzle_seal_y, minp.z+1, minp.x+3, puzzle_seal_y+2, minp.z+3) do
-				data[seal_vi] = c_air
-			end			
-			puzzle_init = {x=minp.x+2, y=puzzle_seal_y, z=minp.z+2}
+
+		if floor_height < maxp.y and floor_height > minp.y then
+			for plat_vi in area:iter(minp.x, floor_height-6, minp.z, minp.x+6, floor_height, minp.z+6) do
+				data[plat_vi] = c_slade_block
+			end
+			puzzle_seal = {x=minp.x+3, y=floor_height+1, z=minp.z+3}
 		end
 	end
 
@@ -435,8 +427,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	--write it to world
 	vm:write_to_map()
 	
-	if puzzle_init ~= nil then
-		minetest.set_node(puzzle_init, {name="df_underworld_items:puzzle_seal"})
+	if puzzle_seal ~= nil then
+		minetest.place_schematic({x=puzzle_seal.x-3, y=puzzle_seal.y, z=puzzle_seal.z-3}, df_underworld_items.seal_temple_schem, 0, {}, true)
+		minetest.set_node(puzzle_seal, {name="df_underworld_items:puzzle_seal"})
 	end
 	
 	if bones_loot_path then
diff --git a/df_primordial_items/jungle_tree.lua b/df_primordial_items/jungle_tree.lua
index 0128bd9..022418a 100644
--- a/df_primordial_items/jungle_tree.lua
+++ b/df_primordial_items/jungle_tree.lua
@@ -10,7 +10,7 @@ minetest.register_node("df_primordial_items:jungle_leaves", {
 	drawtype = "plantlike",
 	walkable = false,
 	waving = 2,
-	visual_scale = 1.2,
+	visual_scale = 1.4,
 	tiles = {"dfcaverns_jungle_leaves_01.png"},
 	inventory_image = "dfcaverns_jungle_leaves_01.png",
 	wield_image = "dfcaverns_jungle_leaves_01.png",
@@ -41,7 +41,7 @@ minetest.register_node("df_primordial_items:jungle_leaves_glowing", {
 	drawtype = "plantlike",
 	walkable = false,
 	waving = 2,
-	visual_scale = 1.2,
+	visual_scale = 1.4,
 	tiles = {"dfcaverns_jungle_leaves_02.png"},
 	inventory_image = "dfcaverns_jungle_leaves_02.png",
 	wield_image = "dfcaverns_jungle_leaves_02.png",
diff --git a/df_underworld_items/puzzle_seal.lua b/df_underworld_items/puzzle_seal.lua
index cbd0227..62615d5 100644
--- a/df_underworld_items/puzzle_seal.lua
+++ b/df_underworld_items/puzzle_seal.lua
@@ -2,6 +2,8 @@
 local MP = minetest.get_modpath(minetest.get_current_modname())
 local S, NS = dofile(MP.."/intllib.lua")
 
+local invulnerable = df_underworld_items.config.invulnerable_slade and not minetest.settings:get_bool("creative_mode")
+
 local get_formspec = function(pos, completion)
 	completion = completion or 0.5
 	local formspec = 
@@ -29,8 +31,9 @@ local puzzle_seal_def = {
 	mesh = "underworld_seal.obj",
 	tiles = {"dfcaverns_slade_block.png", "dfcaverns_slade_block.png^dfcaverns_seal.png", "dfcaverns_slade_block.png"},
 	paramtype = "light",
+	paramtype2 = "facedir",
 	light_source = 12,
-	groups = {immortal=1, stone=1, level=3, slade=1, cracky=1, pit_plasma_resistant=1, mese_radiation_shield=1, not_in_creative_inventory=1},
+	groups = {stone=1, level=3, slade=1, pit_plasma_resistant=1, mese_radiation_shield=1, not_in_creative_inventory=1},
 	sounds = default.node_sound_stone_defaults({ footstep = { name = "bedrock2_step", gain = 1 } }),
 		selection_box = {
 		type = "fixed",
@@ -42,13 +45,50 @@ local puzzle_seal_def = {
 	},
 	is_ground_content = false,
 	on_blast = function() end,
+	on_rotate = function() return false end,
 	on_construct = function(pos)
 	    ensure_inventory(pos)
 	end,
 	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		minetest.get_node_timer(pos):start(1)
 		--ensure_inventory(pos) -- needed because mapgen doesn't call on_construct
-		local player_name = clicker:get_player_name()
-		minetest.show_formspec(player_name, "df_underworld_items_puzzle_seal:"..minetest.pos_to_string(pos)..":"..player_name, get_formspec(pos))
+		--local player_name = clicker:get_player_name()
+		--minetest.show_formspec(player_name, "df_underworld_items_puzzle_seal:"..minetest.pos_to_string(pos)..":"..player_name, get_formspec(pos))
+	end,
+	
+	on_timer = function(pos, elapsed)
+		local node = minetest.get_node(pos)
+		local below_node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
+		if below_node.name == "ignore" then
+			minetest.get_node_timer(pos):start(1)
+			return
+		end
+		
+		if minetest.get_item_group(below_node.name, "slade") == 0 then
+			minetest.set_node(pos, {name="air"})
+			return
+		end
+		
+		local rot = node.param2
+		if rot == 0 then
+			minetest.place_schematic({x=pos.x-3, y=pos.y-2, z=pos.z-3}, df_underworld_items.seal_stair_schem, 0, {}, true)
+			node.param2 = 1
+		elseif rot == 1 then
+			minetest.place_schematic({x=pos.x-3, y=pos.y-2, z=pos.z-3}, df_underworld_items.seal_stair_schem, 90, {}, true)
+			node.param2 = 2
+		elseif rot == 2 then
+			minetest.place_schematic({x=pos.x-3, y=pos.y-2, z=pos.z-3}, df_underworld_items.seal_stair_schem, 180, {}, true)
+			node.param2 = 3
+		elseif rot == 3 then
+			minetest.place_schematic({x=pos.x-3, y=pos.y-2, z=pos.z-3}, df_underworld_items.seal_stair_schem, 270, {}, true)
+			node.param2 = 0
+		else
+			return
+		end
+		minetest.set_node(pos, {name="air"})
+		local newpos = {x=pos.x, y=pos.y-2, z=pos.z}
+		minetest.set_node(newpos, node)
+		minetest.get_node_timer(newpos):start(1)		
 	end,
 	on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
 	end,
@@ -58,6 +98,26 @@ local puzzle_seal_def = {
 	end,
 }
 
+if invulnerable then
+	puzzle_seal_def.groups.immortal = 1
+else
+	puzzle_seal_def.groups.cracky = 3
+end
+
+minetest.register_node("df_underworld_items:puzzle_seal", puzzle_seal_def)
+
+local n1 = { name = "df_underworld_items:slade_block" }
+local n5 = { name = "default:meselamp" }
+local n6 = { name = "air", prob = 0 } -- ceiling pieces to leave in place
+local n8 = { name = "df_underworld_items:puzzle_seal" }
+local n3 = { name = "air"}
+local n2 = n3
+local n4 = n3
+local n7 = n3
+local n9 = n3
+local n10 = n1
+local n11 = n3
+
 if minetest.get_modpath("stairs") then
 	local stair_groups = {level = 3, mese_radiation_shield=1, pit_plasma_resistant=1, slade=1}
 	if invulnerable then
@@ -66,14 +126,56 @@ if minetest.get_modpath("stairs") then
 		stair_groups.cracky = 3
 	end
 
-	stairs.register_stair(
+	stairs.register_stair_and_slab(
 		"slade_block",
 		"df_underworld_items:slade_block",
 		stair_groups,
 		{"dfcaverns_slade_block.png"},
 		S("Slade Block Stair"),
+		S("Slade Block Slab"),
 		default.node_sound_stone_defaults({ footstep = { name = "bedrock2_step", gain = 1 } })
 	)
+	
+	n2 = { name = "stairs:stair_slade_block", param2 = 3 }
+	n4 = { name = "stairs:stair_slade_block", param2 = 1 }
+	n7 = { name = "stairs:stair_slade_block", param2 = 2 }
+	n9 = { name = "stairs:stair_slade_block" }
+	n10 = { name = "stairs:slab_slade_block", param2 = 21 }
+	n11 = { name = "stairs:slab_slade_block", param2 = 1 }
 end
 
-minetest.register_node("df_underworld_items:puzzle_seal", puzzle_seal_def)
+df_underworld_items.seal_temple_schem = {
+	size = {y = 6, x = 7, z = 7},
+	data = {
+		n1, n2, n3, n3, n3, n4, n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, n3, 
+		n3, n3, n3, n1, n5, n3, n3, n3, n3, n3, n5, n6, n6, n6, n6, n6, n6, 
+		n6, n6, n6, n6, n6, n6, n6, n6, n7, n3, n3, n3, n3, n3, n7, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, 
+		n3, n3, n6, n3, n3, n3, n3, n3, n6, n6, n6, n6, n6, n6, n6, n6, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n6, n3, n3, n3, n3, n3, n6, 
+		n6, n6, n3, n3, n3, n6, n6, n3, n3, n3, n8, n3, n3, n3, n3, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, 
+		n3, n6, n3, n3, n3, n3, n3, n6, n6, n6, n3, n3, n3, n6, n6, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n6, n3, n3, n3, n3, n3, n6, n6, 
+		n6, n3, n3, n3, n6, n6, n9, n3, n3, n3, n3, n3, n9, n3, n3, n3, n3, 
+		n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, n3, 
+		n6, n3, n3, n3, n3, n3, n6, n6, n6, n6, n6, n6, n6, n6, n1, n2, n3, 
+		n3, n3, n4, n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, n3, n3, n3, n3, 
+		n1, n5, n3, n3, n3, n3, n3, n5, n6, n6, n6, n6, n6, n6, n6, n6, n6, 
+		n6, n6, n6, n6, n6, 
+	}
+}
+
+df_underworld_items.seal_stair_schem = {
+	size = {y = 2, x = 7, z = 7},
+	data = {
+		n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n10, 
+		n3, n3, n3, n1, n1, n3, n11, n1, n10, n3, n1, n1, n11, n3, n3, n3, n3, 
+		n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, 
+		n3, n3, n3, n3, n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, n3, n3, n3, 
+		n3, n1, n1, n3, n3, n3, n3, n3, n1, n1, n3, n3, n3, n3, n3, n1, n1, 
+		n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, n1, 
+	}
+}
\ No newline at end of file