diff --git a/mods/MAPGEN/mcl_structures/init.lua b/mods/MAPGEN/mcl_structures/init.lua
index 5b6be892d..44d21cd96 100644
--- a/mods/MAPGEN/mcl_structures/init.lua
+++ b/mods/MAPGEN/mcl_structures/init.lua
@@ -244,6 +244,7 @@ dofile(modpath.."/ocean_ruins.lua")
 dofile(modpath.."/witch_hut.lua")
 dofile(modpath.."/igloo.lua")
 dofile(modpath.."/woodland_mansion.lua")
+dofile(modpath.."/ruined_portal.lua")
 dofile(modpath.."/geode.lua")
 
 
diff --git a/mods/MAPGEN/mcl_structures/ruined_portal.lua b/mods/MAPGEN/mcl_structures/ruined_portal.lua
new file mode 100644
index 000000000..cea89e0e9
--- /dev/null
+++ b/mods/MAPGEN/mcl_structures/ruined_portal.lua
@@ -0,0 +1,82 @@
+local modname = minetest.get_current_modname()
+local modpath = minetest.get_modpath(modname)
+
+local function get_replacements(b,c,pr)
+	local r = {}
+	if not b then return r end
+	for k,v in pairs(b) do
+		if pr:next(1,100) < c then table.insert(r,v) end
+	end
+	return r
+end
+
+local def = {
+	place_on = {"group:grass_block","group:dirt","mcl_core:dirt_with_grass","group:grass_block","group:sand","group:grass_block_snow","mcl_core:snow"},
+	fill_ratio = 0.01,
+	flags = "place_center_x, place_center_z, all_floors",
+	solid_ground = true,
+	make_foundation = true,
+	chunk_probability = 400,
+	y_max = mcl_vars.mg_overworld_max,
+	y_min = 1,
+	sidelen = 10,
+	y_offset = -4,
+	filenames = {
+		modpath.."/schematics/mcl_structures_ruined_portal_1.mts",
+		modpath.."/schematics/mcl_structures_ruined_portal_2.mts",
+		modpath.."/schematics/mcl_structures_ruined_portal_99.mts",
+	},
+	after_place = function(pos,def,pr)
+		local hl = def.sidelen / 2
+		local p1 = vector.offset(pos,-hl,-hl,-hl)
+		local p2 = vector.offset(pos,hl,hl,hl)
+		local gold = minetest.find_nodes_in_area(p1,p2,{"mcl_core:goldblock"})
+		local lava = minetest.find_nodes_in_area(p1,p2,{"mcl_core:lava_source"})
+		local rack = minetest.find_nodes_in_area(p1,p2,{"mcl_nether:netherrack"})
+		local brick = minetest.find_nodes_in_area(p1,p2,{"mcl_core:stonebrick"})
+		local obby = minetest.find_nodes_in_area(p1,p2,{"mcl_core:obsidian"})
+		minetest.bulk_set_node(get_replacements(gold,30,pr),{name="air"})
+		minetest.bulk_set_node(get_replacements(lava,20,pr),{name="mcl_nether:magma"})
+		minetest.bulk_set_node(get_replacements(rack,7,pr),{name="mcl_nether:magma"})
+		minetest.bulk_set_node(get_replacements(obby,30,pr),{name="mcl_core:crying_obsidian"})
+		minetest.bulk_set_node(get_replacements(obby,10,pr),{name="air"})
+		minetest.bulk_set_node(get_replacements(brick,50,pr),{name="mcl_core:stonebrickcracked"})
+		brick = minetest.find_nodes_in_area(p1,p2,{"mcl_core:stonebrick"})
+		minetest.bulk_set_node(get_replacements(brick,50,pr),{name="mcl_core:stonebrickmossy"})
+	end,
+	loot = {
+		["mcl_chests:chest_small" ] ={{
+			stacks_min = 2,
+			stacks_max = 6,
+			items = {
+				{ itemstring = "mcl_core:iron_nugget", weight = 40, amount_min = 9, amount_max = 18 },
+				{ itemstring = "mcl_core:flint", weight = 40, amount_min = 1, amount_max=4 },
+				{ itemstring = "mcl_core:obsidian", weight = 40, amount_min = 1, amount_max=2 },
+				{ itemstring = "mcl_fire:fire_charge", weight = 40, amount_min = 1, amount_max = 1 },
+				{ itemstring = "mcl_fire:flint_and_steel", weight = 40, amount_min = 1, amount_max = 1 },
+				{ itemstring = "mcl_core:gold_nugget", weight = 15, amount_min = 4, amount_max = 24 },
+				{ itemstring = "mcl_core:apple_gold", weight = 15, },
+
+				{ itemstring = "mcl_books:book", weight = 1, func = function(stack, pr)
+					mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr)
+				end },
+				--{ itemstring = "mcl_bamboo:bamboo", weight = 15, amount_min = 1, amount_max=3 }, --FIXME BAMBOO
+
+				{ itemstring = "mcl_core:diamond", weight = 3, amount_min = 1, amount_max = 3 },
+				{ itemstring = "mcl_mobitems:saddle", weight = 3, },
+				{ itemstring = "mcl_core:emerald", weight = 2, amount_min = 1, amount_max = 3 },
+
+				{ itemstring = "mcl_mobitems:iron_horse_armor", weight = 1, },
+				{ itemstring = "mcl_mobitems:gold_horse_armor", weight = 1, },
+				{ itemstring = "mcl_mobitems:diamond_horse_armor", weight = 1, },
+				{ itemstring = "mcl_core:apple_gold", weight = 15, },
+			}
+		}}
+	}
+}
+mcl_structures.register_structure("ruined_portal_overworld",def)
+local ndef = table.copy(def)
+ndef.y_min=mcl_vars.mg_nether_lava_min
+ndef.y_max=mcl_vars.mg_nether_max - 15
+ndef.place_on = {"mcl_nether:netherrack","group:soul_block","mcl_blackstone:basalt,mcl_blackstone:blackstone","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium"},
+mcl_structures.register_structure("ruined_portal_nether",ndef)
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts
new file mode 100644
index 000000000..ae37576dc
Binary files /dev/null and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_1.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts
new file mode 100644
index 000000000..fd17f1365
Binary files /dev/null and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_2.mts differ
diff --git a/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts
new file mode 100644
index 000000000..0834d8923
Binary files /dev/null and b/mods/MAPGEN/mcl_structures/schematics/mcl_structures_ruined_portal_99.mts differ