The fastest way to get high runes in Diablo II Single Player is considered to be Lower Kurast running. You reroll your map until you get a map with 6 Superchests close to your Lower Kurast Waypoint. There are always 3 Superchests and a corpse next to a bonfire in lower kurast and I always wondered if it is worth it to invest the extra time to check the guaranteed corpse. It probably just takes around 2 seconds per run, but when doing hundereds or even thousands of runs it makes a big difference, when a run takes around 15-20 seconds.
That beeing said, I have seen people on YouTube drop the desired Ber-Rune and I myself dropped it from a corpse before. But although the odds of the superchests are clear (~ 2 / 65k) I am not sure about the odds of the corpses. Following up that question: there are many other popables in Lower Kurast. Is it worth to check those if they are on your path to the superchests?