diff --git a/ziptunnel/description.md b/ziptunnel/description.md
new file mode 100644
index 0000000..0320a34
--- /dev/null
+++ b/ziptunnel/description.md
@@ -0,0 +1 @@
+Great blazes! Something looks awfully suspicious about this zip file. Can you find out just how deep [the rabbit hole](${level420_zip}) goes?
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diff --git a/ziptunnel/grader.py b/ziptunnel/grader.py
new file mode 100644
index 0000000..f1d3865
--- /dev/null
+++ b/ziptunnel/grader.py
@@ -0,0 +1,4 @@
+def grade(autogen, key):
+    if key.find("x4m1n3_uR_z1pp34_PDq_17c4ee3") != -1:
+        return True, "Awesome work! Is it dark down there at the end of the tunnel?"
+    return False, "Nope."
diff --git a/ziptunnel/level420.zip b/ziptunnel/level420.zip
new file mode 100644
index 0000000..a8adbe8
Binary files /dev/null and b/ziptunnel/level420.zip differ
diff --git a/ziptunnel/problem.yml b/ziptunnel/problem.yml
new file mode 100644
index 0000000..118f7e2
--- /dev/null
+++ b/ziptunnel/problem.yml
@@ -0,0 +1,9 @@
+author: blockingthesky
+title: ZIP Tunnel
+category: Forensics
+hint: Whenever I go to Subway, I get double ham, wamerican, bacon, lettuce, and mayo. No frills.
+autogen: false
+programming: false
+value: 160
+files:
+  - level420.zip
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