diff --git a/mapgen.lua b/mapgen.lua
index de905f2..78e589e 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -366,7 +366,7 @@ local function generate(p_minp, p_maxp, seed)
 								biome_val = biome_val / max(1, log(y - fluid_compression))
 							end
 							-------------------
-							--biome_val = 0.55
+							--biome_val = 0.45
 							-------------------
 							if biome_val < -0.65 then
 								stone_type = node["default:ice"]
@@ -442,6 +442,11 @@ local function generate(p_minp, p_maxp, seed)
 									end
 								end
 
+								if not air_above and stone_type == node["default:sand"] then
+									data[ivm] = node["default:sandstone"]
+									break
+								end
+
 								if data[ivm] == node["default:stone"] and air_below then
 									if stone_type == node["fun_caves:stone_with_salt"] and rand(radioactive_ratio) == 1 then
 										data[ivm] = node["fun_caves:radioactive_ore"]