Butter lamps (Tibetan: དཀར་མེ་, Wylie: dkar me; simplified Chinese: 酥油灯; traditional Chinese: 酥油燈; pinyin: sūyóu dēng) are a conspicuous feature of Tibetan Buddhist temples and monasteries throughout the Himalayas. The lamps traditionally burn clarified yak butter, but now often use vegetable oil or vanaspati ghee.
Pilgrims also supply lamp oil to gain merit. The monks in the monastery manage the actual lamps, taking extreme care to avoid starting one of the devastating fires which have damaged many monasteries over the years. For safety, butter lamps are sometimes restricted to a separate courtyard enclosure with a stone floor.
Externally, the lights are seen to banish darkness. Conceptually, they convert prosaic substance into illumination, a transformation akin to the search for enlightenment. Esoterically, they recall the heat of the tummo yoga energy of the Six Yogas of Naropa, an important text for Kagyu, Gelug, and Sakya schools of tantric Buddhism.
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