I'm using the stock Android 2.1 gallery to view images. I have a large JPG image (approx 7000x7000 pixels) of bicycle route map for my city. I tried zooming and scrolling with the gallery image viewer, but it cannot zoom in close enough to read the map detail. Is there a better image viewer app out there that is good for zooming and scrolling large JPG images? Thanks. I would like to use Google maps, but the bicycle route mode still does not work in the Android app.