There are 5 linked panoramas here along the route of the Everest Arun Valley trek that we did in 1998.
It is an interactive panorama so you can pan around and zoom in and out. The right most button in the tool bar gives full screen. The "M" button in the newer tours toggles a Google Map with clickable markers. The radar icon on the top right shows orientation and field of view. Most are multi resolution so when you zoom in there may be a slight delay as the files load.