diff --git a/mods/MAPGEN/mcl_mapgen_core/structures.lua b/mods/MAPGEN/mcl_mapgen_core/structures.lua
index b18c31415..b000f77f4 100644
--- a/mods/MAPGEN/mcl_mapgen_core/structures.lua
+++ b/mods/MAPGEN/mcl_mapgen_core/structures.lua
@@ -67,16 +67,61 @@ end
 --local chunk_has_desert_temple
 --local chunk_has_igloo
 
-
-
-
-minetest.register_node("mcl_mapgen_core:desert_temple", {
-	-- drawtype="airlike",
-	tiles = {"mcl_core_stonebrick_carved.png"},
-	groups = {
-		struct                    = 1,
-		not_in_creative_inventory = 1,
+mcl_structures.register_structure({
+	name = "desert_temple",
+	decoration = {
+		deco_type = "simple",
+		place_on = {"mcl_core:sand", "mcl_core:sandstone"},
+		flags = "all_floors",
+		fill_ratio = 0.001,
+		y_min = 5,
+		y_max = mcl_mapgen.overworld.max,
+		height = 1,
+		biomes = {
+			"ColdTaiga_beach",
+			"ColdTaiga_beach_water",
+			"Desert",
+			"Desert_ocean",
+			"ExtremeHills_beach",
+			"FlowerForest_beach",
+			"Forest_beach",
+			"MesaBryce_sandlevel",
+			"MesaPlateauF_sandlevel",
+			"MesaPlateauFM_sandlevel",
+			"Savanna",
+			"Savanna_beach",
+			"StoneBeach",
+			"StoneBeach_ocean",
+			"Taiga_beach",
+		},
 	},
+	on_generated = function(minp, maxp, seed, vm_context, pos_list)
+		local aaa = ''
+		for _, p in pairs(pos_list) do
+			if aaa ~= '' then
+				aaa = aaa .. ', '
+			end
+			aaa = aaa .. minetest.pos_to_string(p)
+		end
+		minetest.chat_send_all('generated ' .. minetest.pos_to_string(minp) .. " ... " .. minetest.pos_to_string(maxp) .. ", pos_list = " .. aaa)
+		local y = 0
+		local temple_pos
+		for _, pos in pairs(pos_list) do
+			if pos.y > y then
+				if temple_pos then
+					minetest.swap_node(temple_pos, {name = 'mcl_core:deadbush'})
+				end
+				temple_pos = pos
+				y = pos.y
+			else
+				minetest.swap_node(pos, {name = 'mcl_core:deadbush'})
+			end
+		end
+		minetest.chat_send_all('here: ' .. minetest.pos_to_string(temple_pos))
+		if not temple_pos then return end
+		-- if pr:next(1,12000) ~= 1 then return end
+		mcl_structures.call_struct(temple_pos, "desert_temple", nil, PseudoRandom(vm_context.chunkseed))
+	end,
 })
 	
 local octaves = 3
@@ -88,73 +133,9 @@ for i = 1, octaves do
 	local noise = 1 * (persistence ^ (i - 1))
 	max_noise = max_noise + noise
 end
-
 max_noise = max_noise * octaves
-
 max_noise = offset + scale * max_noise
 
---[[function structures.register_structure(
-	name,		-- "desert_temple"
-	place_on,	-- {"mcl_core:sand", "mcl_core:sandstone"}
-	flags,		-- "all_floors"
-]]
-
-
-minetest.register_decoration({
-	decoration = "mcl_mapgen_core:desert_temple",
-	deco_type = "simple",
-	place_on = {"mcl_core:sand", "mcl_core:sandstone"},
-	flags = "all_floors",
---[[	noise_params = {
-		offset = offset,
-		scale  = scale,
-		spread = {
-			x = 1,
-			y = 1,
-			z = 1,
-		},
-		seed        = 329,
-		octaves     = octaves,
-		persistence = persistence,
-		lacunarity  = 2.0,
-		flags       = "eased",
-	},
-	noise_threshold = 1000,-- * 0.9,
-]]
-	fill_ratio = 0.001,
-	y_min = 5,
-	y_max = mcl_mapgen.overworld.max,
-	height = 1,
-	biomes = {
-		"ColdTaiga_beach",
-		"ColdTaiga_beach_water",
-		"Desert",
-		"Desert_ocean",
-		"ExtremeHills_beach",
-		"FlowerForest_beach",
-		"Forest_beach",
-		"MesaBryce_sandlevel",
-		"MesaPlateauF_sandlevel",
-		"MesaPlateauFM_sandlevel",
-		"Savanna",
-		"Savanna_beach",
-		"StoneBeach",
-		"StoneBeach_ocean",
-		"Taiga_beach",
-	},
-})
-
---minetest.register_lbm(
---	name = "mcl_mapgen_core:process_struct_seed",
---	nodenames = {
---		"group:struct",
---	}
---	run_at_everly_load = true,
---	action = function(pos, node)
---	end,
---)
-
-
 local function spawn_desert_temple(p, nn, pr, vm_context)
 	if p.y < 5 then return end
 	if nn ~= "mcl_core:sand" and nn ~= "mcl_core:sandstone" then return end
@@ -381,19 +362,15 @@ local levels = {
 		local noise = perlin_structures:get_2d({x=x0, y=z0})
 		local amount
 		if noise < 0 then
-			amount = math_ceil(noise * 9)
+			amount = math_max(math_ceil(noise * 9), -9)
 		else
-			amount = math_floor(noise * 9)
+			amount = math_min(math_floor(noise * 9), 9)
 		end
 		-- local amount = math_floor(perlin_structures:get_2d({x=x0, y=z0}) * 9)
 
 		local y1 = maxp.y - 9 + amount
 		for x1 = x0, x0 + DIVLEN - 1, 1 do for z1 = z0, z0 + DIVLEN - 1, 1 do
-			if not levels[amount] then
-				minetest.log("ERROR",tostring(amount))
-			else
-				minetest.set_node({x=x1, y=y1, z=z1}, {name = "mcl_core:glass_"..levels[amount]})
-			end
+			minetest.set_node({x=x1, y=y1, z=z1}, {name = "mcl_core:glass_"..levels[amount]})
 		end end
 
 		-- Find random positions based on this random
diff --git a/mods/MAPGEN/mcl_structures/init.lua b/mods/MAPGEN/mcl_structures/init.lua
index d54cd600f..3bea78cef 100644
--- a/mods/MAPGEN/mcl_structures/init.lua
+++ b/mods/MAPGEN/mcl_structures/init.lua
@@ -3,33 +3,119 @@ local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
 
 mcl_structures = {}
-
 local rotations = {
 	"0",
 	"90",
 	"180",
 	"270"
 }
-
 local registered_structures = {}
+local use_process_mapgen_block_lvm = false
+local use_process_mapgen_chunk = false
+local lvm_callbacks = {}
+local chunk_callbacks = {}
 
+function process_mapgen_block_lvm(vm_context)
+	local nodes = minetest.find_nodes_in_area(vm_context.minp, vm_context.maxp, {"group:struct"}, true)
+	-- if #nodes == 0 then return end
+	for node_name, pos_list in pairs(nodes) do
+		local lvm_callback = lvm_callbacks[node_name]
+		if lvm_callback then
+			lvm_callback(vm_context, pos_list)
+		end
+	end
+end
+
+function process_mapgen_chunk(minp, maxp, seed, vm_context)
+	local nodes = minetest.find_nodes_in_area(minp, maxp, {"group:struct"}, true)
+	minetest.log("warning", "found " .. tostring(#nodes))
+	-- if #nodes == 0 then return end
+	for node_name, pos_list in pairs(nodes) do
+		local chunk_callback = chunk_callbacks[node_name]
+		if chunk_callback then
+			chunk_callback(minp, maxp, seed, vm_context, pos_list)
+		end
+	end
+end
+
+--------------------------------------------------------------------------------------
+-- mcl_structures.register_structure(struct_def)
+-- struct_def:
+--	name		- name like 'desert_temple'
+--	decoration	- decoration definition if needed
+--	on_mapgen_prep	- callback if needed
+--	on_generated	- next callback if needed
+--	on_place	- placer function(pos, rotation, pr)
+--	order_number	- (optional)
 function mcl_structures.register_structure(def)
-	local name = def.name
+	local name           = "mcl_structures:" .. def.name
+	local decoration     = def.decoration
+	local on_mapgen_prep = def.on_mapgen_prep
+	local on_generated   = def.on_generated
 	if not name then
-		minetest.log('warning', 'Structure name is not passed for registering - ignoring')
+		minetest.log('warning', 'Structure name is not passed for registration - ignoring')
 		return
 	end
 	if registered_structures[name] then
 		minetest.log('warning', 'Structure '..name..' is already registered - owerwriting')
 	end
+	local decoration_id
+	if decoration then
+		minetest.register_node(':' .. name, {
+			-- drawtype="airlike",
+			groups = {
+				struct                    = 1,
+				not_in_creative_inventory = 1,
+			},
+		})
+		decoration_id = minetest.register_decoration({
+			deco_type      = decoration.deco_type,
+			place_on       = decoration.place_on,
+			sidelen        = decoration.sidelen,
+			fill_ratio     = decoration.fill_ratio,
+			noise_params   = decoration.noise_params,
+			biomes         = decoration.biomes,
+			y_min          = decoration.y_min,
+			y_max          = decoration.y_max,
+			spawn_by       = decoration.spawn_by,
+			num_spawn_by   = decoration.num_spawn_by,
+			flags          = decoration.flags,
+			decoration     = name,
+			height         = decoration.height,
+			height_max     = decoration.height_max,
+			param2         = decoration.param2,
+			param2_max     = decoration.param2_max,
+			place_offset_y = decoration.place_offset_y,
+			schematic      = decoration.schematic,
+			replacements   = decoration.replacements,
+			flags          = decoration.flags,
+			rotation       = decoration.rotation,
+		})
+	end
 	registered_structures[name] = {
 		on_place       = def.on_place,
-		decoration     = def.decoration,
-		on_mapgen_prep = def.on_mapgen_prep,
-		on_generated   = def.on_generated,
+		on_mapgen_prep = on_mapgen_prep,
+		on_generated   = on_generated,
+		decoration_id  = decoration_id,
 	}
+	if on_mapgen_prep then
+		lvm_callbacks[name] = on_mapgen_prep
+		if not use_process_mapgen_block_lvm then
+			use_process_mapgen_block_lvm = true
+			mcl_mapgen.register_mapgen_block_lvm(process_mapgen_block_lvm, mcl_mapgen.order.BUILDINGS)
+		end
+	end
+	if on_generated then
+		minetest.log("warning", "GERISTERED!!!")
+		chunk_callbacks[name] = on_generated
+		if not use_process_mapgen_chunk then
+			use_process_mapgen_chunk = true
+			mcl_mapgen.register_mapgen(process_mapgen_chunk, mcl_mapgen.order.BUILDINGS)
+		end
+	end
 end
 
+-- It doesN'T remove registered node and decoration!
 function mcl_structures.unregister_structure(name)
 	if not registered_structures[name] then
 		minetest.log('warning','Structure '..name..' is not registered - skipping')
@@ -599,12 +685,13 @@ end
 function mcl_structures.generate_desert_temple(pos, rotation, pr)
 	-- No Generating for the temple ... Why using it ? No Change
 	local path = modpath.."/schematics/mcl_structures_desert_temple.mts"
-	local newpos = {x=pos.x,y=pos.y-12,z=pos.z}
+	--local newpos = {x=pos.x,y=pos.y-12,z=pos.z}
 	--local size = {x=22, y=24, z=22}
-	if newpos == nil then
-		return
-	end
-	mcl_structures.place_schematic(newpos, path, rotation or "random", nil, true, nil, temple_placement_callback, pr)
+	--if newpos == nil then
+	--	return
+	-- end
+	pos.y = pos.y - 12
+	mcl_structures.place_schematic({pos = pos, schematic = path, rotation = rotation or "random", pr = pr, emerge = true})
 end
 
 local registered_structures = {}