diff --git a/Makefile b/Makefile
index 2dee383..3b0b9d6 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ SRC_CRATE      = $(TARGET).rs
 EXTERN_DIR     = $(ROOT_DIR)/extern
 BUILD_DIR      = $(ROOT_DIR)/lib
 
-CFG            = --cfg=geom --cfg=world
+CFG            = --cfg=geom --cfg=noise --cfg=world
 
 TEST           = $(TARGET)
 TEST_BUILD_DIR = $(ROOT_DIR)/test
diff --git a/src/lmath.rs b/src/lmath.rs
index 8fd978f..2425667 100644
--- a/src/lmath.rs
+++ b/src/lmath.rs
@@ -30,6 +30,10 @@ pub mod core;
 #[path = "geom/geom.rs"]
 pub mod geom;
 
+#[cfg(noise)]
+#[path = "noise/noise.rs"]
+pub mod noise;
+
 #[cfg(world)]
 #[path = "world/world.rs"]
 pub mod world;
diff --git a/src/noise/noise.rs b/src/noise/noise.rs
new file mode 100644
index 0000000..4defb06
--- /dev/null
+++ b/src/noise/noise.rs
@@ -0,0 +1,17 @@
+// Copyright 2013 The Lmath Developers. For a full listing of the authors,
+// refer to the AUTHORS file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+pub mod perlin;
+pub mod simplex;
diff --git a/src/noise/perlin.rs b/src/noise/perlin.rs
new file mode 100644
index 0000000..36a588b
--- /dev/null
+++ b/src/noise/perlin.rs
@@ -0,0 +1,16 @@
+// Copyright 2013 The Lmath Developers. For a full listing of the authors,
+// refer to the AUTHORS file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// TODO
diff --git a/src/noise/simplex.rs b/src/noise/simplex.rs
new file mode 100644
index 0000000..36a588b
--- /dev/null
+++ b/src/noise/simplex.rs
@@ -0,0 +1,16 @@
+// Copyright 2013 The Lmath Developers. For a full listing of the authors,
+// refer to the AUTHORS file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// TODO