diff --git a/index.html b/index.html
index e380418..408313e 100644
--- a/index.html
+++ b/index.html
@@ -147,6 +147,10 @@
           <a href="//github.com/carp-lang/carp">Carp</a>), and prototyping
           ideas around that.
         </p>
+        <p>
+          You can take a look at <a href="https://veitheller.de/git/carpentry/pond">
+          an early-stage prototype</a>.
+        </p>
       </details>
       <details id="services">
         <summary>What I can do for you</summary>