diff --git a/java/src/org/broadinstitute/sting/playground/gatk/walkers/AvgDepthOfCoverageWalker.java b/java/src/org/broadinstitute/sting/playground/gatk/walkers/AvgDepthOfCoverageWalker.java
new file mode 100644
index 000000000..83c6f5434
--- /dev/null
+++ b/java/src/org/broadinstitute/sting/playground/gatk/walkers/AvgDepthOfCoverageWalker.java
@@ -0,0 +1,28 @@
+package org.broadinstitute.sting.playground.gatk.walkers;
+
+import org.broadinstitute.sting.utils.Pair;
+import org.broadinstitute.sting.gatk.LocusContext;
+import org.broadinstitute.sting.gatk.refdata.ReferenceOrderedDatum;
+import org.broadinstitute.sting.gatk.walkers.LocusWalker;
+import org.broadinstitute.sting.gatk.walkers.WalkerName;
+import java.util.List;
+
+@WalkerName("Average_Depth_Of_Coverage")
+public class AvgDepthOfCoverageWalker extends LocusWalker<Integer, Pair<Long, Long>> {
+
+    public Integer map(List<ReferenceOrderedDatum> rodData, char ref, LocusContext context) {
+        return context.getReads().size();
+    }
+
+    public Pair<Long, Long> reduceInit() { return new Pair<Long, Long>((long)0,(long)0); }
+
+    public Pair<Long, Long> reduce(Integer value, Pair<Long, Long> sum) {
+        long left = new Long(value.longValue() + sum.getFirst().longValue());
+        long right = new Long(sum.getSecond().longValue() + 1);
+        return new Pair<Long, Long>(left, right);
+    }
+
+    public void onTraversalDone(Pair<Long, Long> result) {
+        System.out.println("Average depth of coverage is: " + ((double)result.getFirst() / (double)result.getSecond()));
+    }
+}