diff --git a/mac/3-dmg.sh b/mac/3-dmg.sh
new file mode 100755
index 00000000000..f69b6e2d035
--- /dev/null
+++ b/mac/3-dmg.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+#
+# A bash script to create a dmg image file of the 
+#            final application bundle
+#              (c) Tim Sutton 2007
+
+DMGNAME=QGISAlaskaUncompressed.dmg
+COMPRESSEDDMGNAME=QGISAlaska.dmg
+set -x
+
+echo "Removing old dmg if it exists"
+rm ~/Desktop/${DMGNAME}
+rm ~/Desktop/${COMPRESSEDDMGNAME}
+hdiutil create -size 300m -fs HFS+ -volname "QGISAlaska" ~/Desktop/${DMGNAME}
+ 
+# Mount the disk image
+hdiutil attach ~/Desktop/${DMGNAME}
+
+# Obtain device information
+DEVS=$(hdiutil attach ~/Desktop/${DMGNAME} | cut -f 1)
+DEV=$(echo $DEVS | cut -f 1 -d ' ')
+VOLUME=$(mount |grep ${DEV} | cut -f 3 -d ' ') 
+ 
+# copy in the application bundle
+cp -Rp /Applications/QGISAlaska.app ${VOLUME}/QGISAlaska.app
+
+# copy in background image and folder settings for icon sizes etc
+tar xvfz alaska_extra_dmg_files.tar.gz -C ${VOLUME} 
+cp ../LICENSE ${VOLUME}/LICENSE.txt
+
+# Unmount the disk image
+hdiutil detach $DEV
+ 
+# Convert the disk image to read-only
+hdiutil convert ~/Desktop/${DMGNAME} \
+  -format UDZO -o ~/Desktop/${COMPRESSEDDMGNAME}
+