diff --git a/depends.txt b/depends.txt
index a9d85c2..ee5729b 100644
--- a/depends.txt
+++ b/depends.txt
@@ -11,3 +11,4 @@ caverealms?
 technic?
 nyancat?
 usesdirt?
+worldedit?
diff --git a/init.lua b/init.lua
index 2211613..a2f3454 100644
--- a/init.lua
+++ b/init.lua
@@ -6,6 +6,8 @@ Maintained by VanessaE.
 
 --]]
 
+gloopblocks = {}
+
 -- Load support for intllib.
 local MP = minetest.get_modpath(minetest.get_current_modname())
 local S, NS = dofile(MP.."/intllib.lua")
@@ -903,6 +905,37 @@ minetest.register_node("gloopblocks:fence_steel", {
 	sounds = default.node_sound_stone_defaults(),
 })
 
+if minetest.get_modpath("worldedit") then
+	function gloopblocks.liquid_ungrief(pos1, pos2, name)
+		local count
+		local p1to2 = minetest.pos_to_string(pos1).." and "..minetest.pos_to_string(pos2)
+		minetest.chat_send_player(name, "Cleaned-up lava/water griefing between "..p1to2..".")
+		minetest.log("action", name.." performs lava-water greifing cleanup between "..p1to2..".")
+		count = worldedit.replace(pos1, pos2, "default:lava_source", "air")
+		count = worldedit.replace(pos1, pos2, "default:lava_flowing", "air")
+		count = worldedit.replace(pos1, pos2, "default:water_source", "air")
+		count = worldedit.replace(pos1, pos2, "default:water_flowing", "air")
+		count = worldedit.replace(pos1, pos2, "default:river_water_source", "air")
+		count = worldedit.replace(pos1, pos2, "default:river_water_flowing", "air")
+		count = worldedit.replace(pos1, pos2, "gloopblocks:pumice_cooled", "air")
+		count = worldedit.replace(pos1, pos2, "gloopblocks:basalt_cooled", "air")
+		count = worldedit.replace(pos1, pos2, "gloopblocks:obsidian_cooled", "air")
+		count = worldedit.fixlight(pos1, pos2)
+	end
+
+	minetest.register_chatcommand("/liquid_ungrief", {
+		params = "[size]",
+		privs = {worldedit = true},
+		description = "Repairs greifing caused by spilling lava and water (and their \"cooling\" results)",
+		func = function(name, params)
+			local pos1 = worldedit.pos1[name]
+			local pos2 = worldedit.pos2[name]
+			if not pos1 or not pos2 then return end
+			gloopblocks.liquid_ungrief(pos1, pos2, name)
+		end
+	})
+end
+
 dofile(minetest.get_modpath("gloopblocks").."/crafts.lua")
 
 minetest.register_alias("nyancat:nyancat_rainbow", "gloopblocks:rainbow_block_horizontal")