--- tsm_pyramids.old/init.lua
+++ tsm_pyramids/init.lua
@@ -6,8 +6,10 @@
 local PYRA_Wm = PYRA_W - 1
 -- Half of (Pyramid width minus 1)
 local PYRA_Wh = PYRA_Wm / 2
--- Minimum spawn height
+
+-- Minimum and maximum spawn heights
 local PYRA_MIN_Y = 3
+local PYRA_MAX_Y = 500
 
 tsm_pyramids = {}
 
@@ -237,7 +239,8 @@
 	return ok, msg
 end
 
-local perl1 = {SEED1 = 9130, OCTA1 = 3,	PERS1 = 0.5, SCAL1 = 250} -- Values should match minetest mapgen V6 desert noise.
+local perl1 = { SEED1 = 9130, OCTA1 = 1, PERS1 = 0.5, SCAL1 =  25 } -- Values should match minetest mapgen V7 desert noise
+
 local perlin1 -- perlin noise buffer
 
 local function hlp_fnct(pos, name)
@@ -310,8 +313,9 @@
 
 -- Attempt to generate a pyramid in the generated area.
 -- Up to one pyramid per mapchunk.
+
 minetest.register_on_generated(function(minp, maxp, seed)
-	if maxp.y < PYRA_MIN_Y then return end
+    if maxp.y < PYRA_MIN_Y or maxp.y > PYRA_MAX_Y then return end
 
 	-- TODO: Use Minetests pseudo-random tools
 	math.randomseed(seed)
@@ -350,8 +354,8 @@
 		if sand_cnt_max_id then
 			sand = sands[sand_cnt_max_id]
 		end
-		if p2.y < PYRA_MIN_Y then
-			minetest.log("info", "[tsm_pyramids] Pyramid not placed, too deep. p2="..minetest.pos_to_string(p2))
+        if p2.y < PYRA_MIN_Y or p2.y > PYRA_MAX_Y then
+            minetest.log("info", "[tsm_pyramids] Not placed, Y out of range. p2="..minetest.pos_to_string(p2))
 			return
 		end
 		-- Now sink the pyramid until each corner of it is no longer floating in mid-air