diff --git a/src/DN10.java b/src/DN10.java
new file mode 100644
index 0000000..740e544
--- /dev/null
+++ b/src/DN10.java
@@ -0,0 +1,38 @@
+import java.io.DataInputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+
+class Chunk {
+    int length;
+    String type;
+    byte[] data;
+
+    Chunk(int length, String type, byte[] data) {
+        this.length = length;
+        this.type = type;
+        this.data = data;
+    }
+
+    static Chunk read(DataInputStream dis) throws IOException {
+        int length = dis.readInt();
+        String type = new String(dis.readNBytes(4));
+        byte[] data = dis.readNBytes(length);
+        dis.skipBytes(4);
+        return new Chunk(length, type, data);
+    }
+}
+
+public class DN10 {
+    public static void main(String[] args) throws IOException {
+        FileInputStream fis = new FileInputStream(args[0]);
+        DataInputStream dis = new DataInputStream(fis);
+
+        dis.skipBytes(8); // header
+
+        Chunk chunk;
+        do {
+            chunk = Chunk.read(dis);
+            System.out.printf("Chunk: %s, length: %d\n", chunk.type, chunk.length);
+        } while (!chunk.type.equals("IEND"));
+    }
+}
diff --git a/viri/lion.png b/viri/lion.png
new file mode 100644
index 0000000..2998ed0
Binary files /dev/null and b/viri/lion.png differ