diff --git a/hot_rock.lua b/hot_rock.lua
index eff62e7..e297a81 100644
--- a/hot_rock.lua
+++ b/hot_rock.lua
@@ -94,7 +94,7 @@ minetest.register_abm{
 			local def = minetest.registered_nodes[name]
 			local target = def._magma_conduits_cools_to
 			if target then
-				minetest.set_node(pos, {name = "default:cobble"})
+				minetest.set_node(pos, {name = target})
 			else
 				minetest.log("error", name .. " is in group lava_heated but doesn't have a _magma_conduits_cools_to property defined in its definition")
 			end
diff --git a/volcanoes.lua b/volcanoes.lua
index e6abde2..ef1e1e4 100644
--- a/volcanoes.lua
+++ b/volcanoes.lua
@@ -39,7 +39,7 @@ local c_water = minetest.get_content_id("default:water_source")
 
 local c_lining = minetest.get_content_id("default:obsidian")
 local c_hot_lining = minetest.get_content_id("default:obsidian")
-local c_cone = minetest.get_content_id("default:stone")
+local c_cone = minetest.get_content_id("default:wood")
 
 local c_ash = minetest.get_content_id("default:gravel")
 local c_soil = minetest.get_content_id("default:dirt")
@@ -63,7 +63,7 @@ local mapgen_seed = tonumber(minetest.get_mapgen_setting("seed"))
 -- the curvy form of a vein or a cave that's one node tall.
 -- Some annoying hackery is needed to patch those slices back up
 -- again, and I only want to do that hackery if we're actually in mapgen v7.
-local mg_name = minetest.get_mapgen_setting("mg_name")
+local mg_name = nil--minetest.get_mapgen_setting("mg_name")
 
 -- derived values