diff --git a/mods/CORE/mcl_mapgen/init.lua b/mods/CORE/mcl_mapgen/init.lua
index 4aca65f54..fc0a98c6b 100644
--- a/mods/CORE/mcl_mapgen/init.lua
+++ b/mods/CORE/mcl_mapgen/init.lua
@@ -325,7 +325,7 @@ minetest.register_on_generated(function(minp, maxp, chunkseed)
 		--  mcl_mapgen.register_mapgen_lvm(function(vm_context), order_number)    --
 		--                                                                        --
 		for _, v in pairs(queue_chunks_lvm) do
-			vm_context = v.f(vm_context)
+			v.f(vm_context)
 		end
 		--                                                                                         --
 		--  mcl_mapgen.register_mapgen(function(minp, maxp, chunkseed, vm_context), order_number)  --
diff --git a/mods/CORE/mcl_worlds/init.lua b/mods/CORE/mcl_worlds/init.lua
index eb366013e..d31913599 100644
--- a/mods/CORE/mcl_worlds/init.lua
+++ b/mods/CORE/mcl_worlds/init.lua
@@ -152,3 +152,23 @@ minetest.register_globalstep(function(dtime)
 		dimtimer = 0
 	end
 end)
+
+function mcl_worlds.get_cloud_parameters()
+	if mcl_mapgen.name == "valleys" then
+		return {
+			height = 384,
+			speed = {x=-2, z=0},
+			thickness=5,
+			color="#FFF0FEF",
+			ambient = "#201060",
+		}
+	else
+		-- MC-style clouds: Layer 127, thickness 4, fly to the “West”
+		return {
+			height = mcl_worlds.layer_to_y(127),
+			speed = {x=-2, z=0},
+			thickness = 4,
+			color = "#FFF0FEF",
+		}
+	end
+end
diff --git a/mods/ENVIRONMENT/mcl_weather/skycolor.lua b/mods/ENVIRONMENT/mcl_weather/skycolor.lua
index 6b89c33be..93e92defc 100644
--- a/mods/ENVIRONMENT/mcl_weather/skycolor.lua
+++ b/mods/ENVIRONMENT/mcl_weather/skycolor.lua
@@ -241,7 +241,7 @@ local function initsky(player)
 	end
 
 	-- MC-style clouds: Layer 127, thickness 4, fly to the “West”
-	player:set_clouds({height=mcl_worlds.layer_to_y(127), speed={x=-2, z=0}, thickness=4, color="#FFF0FEF"})
+	player:set_clouds(mcl_worlds:get_cloud_parameters() or {height=mcl_worlds.layer_to_y(127), speed={x=-2, z=0}, thickness=4, color="#FFF0FEF"})
 end
 
 minetest.register_on_joinplayer(initsky)