diff --git a/world/src/block/mod.rs b/world/src/block/mod.rs
index ab9861556f..7c3b531206 100644
--- a/world/src/block/mod.rs
+++ b/world/src/block/mod.rs
@@ -66,7 +66,21 @@ impl<'a> Sampler for BlockGen<'a> {
             .mul((chaos - 0.1).max(0.0))
             .mul(90.0);
 
-        let height = alt + warp;
+        let cliff = (self.world.sim()
+            .gen_ctx
+            .warp_nz
+            .get((wposf.div(Vec3::new(150.0, 150.0, 150.0))).into_array())
+            as f32)
+            //.add(0.6)
+            .mul(130.0);
+
+        let is_cliff = (self.world.sim()
+            .gen_ctx
+            .warp_nz
+            .get((wposf.div(Vec3::new(100.0, 100.0, 100.0))).into_array())
+            as f32) > 0.0;//4;
+
+        let height = alt + warp + if is_cliff { cliff } else { 0.0 };
 
         // Sample blocks
 
diff --git a/world/src/sim/mod.rs b/world/src/sim/mod.rs
index f0541d3c17..ec6e91abe0 100644
--- a/world/src/sim/mod.rs
+++ b/world/src/sim/mod.rs
@@ -140,7 +140,7 @@ impl WorldSim {
     }
 }
 
-const Z_TOLERANCE: (f32, f32) = (128.0, 64.0);
+const Z_TOLERANCE: (f32, f32) = (128.0, 128.0);
 
 pub struct SimChunk {
     pub chaos: f32,
@@ -179,7 +179,7 @@ impl SimChunk {
         let alt_base = alt_base
             .mul(0.4)
             .add(alt_base.mul(128.0).sin().mul(0.005))
-            .mul(800.0);
+            .mul(400.0);
 
         let alt_main = (gen_ctx.alt_nz.get((wposf.div(1_000.0)).into_array()) as f32)
             .abs()