diff --git a/src/bin/TurtleCtl.hx b/src/bin/TurtleCtl.hx
index 4dd8a0c..f74bead 100644
--- a/src/bin/TurtleCtl.hx
+++ b/src/bin/TurtleCtl.hx
@@ -1,5 +1,6 @@
 package bin;
 
+import lib.turtle.Helper;
 import kernel.turtle.TurtleMutex;
 import kernel.turtle.Turtle;
 import lib.turtle.InvManager;
@@ -110,6 +111,11 @@ class TurtleCtl extends CLIAppBase {
 					return Future.sync(false);
 			}
 		}, [String("direction")]);
+
+		registerAsyncSubcommand("tunnel", (args) -> {
+			var len = args.getInt("length");
+			return asynPerform(Helper.combine.bind([Turtle.dig.bind(Front), Turtle.forward, Turtle.dig.bind(Up)]), len);
+		}, [Int("length")]);
 	}
 
 	private function asynPerform(op:Void->Outcome<Noise, String>, times:Int):Future<Bool> {