There's a village in Rakhine state where the villagers have been hand drilling for oil from the ground for generations. The villagers told me that the British came during colonial times and found the oil but left it. I read about similar accounts later: the oil is just not high enough quality to make a profit. In this village the oil is running out and their tradition will disappear with it.
Yangon plunges into darkness every time the electricity cuts out--which is often. For those who can't afford a generator or a flashlight, candles are the only option. Here's one community behind the Central Railway Station in Yangon lit by candle light.