Dhamek Stupa is a massive stupa located at Sarnath, 13 km away from Varanasi in the state of Uttar Pradesh, India. Stupas originated as pre-Buddhist tumuli, in which ascetics were buried in a seated position, called chaitya. After the parinirvana of the Buddha, his remains were cremated and the ashes divided and buried under eight mounds with two further mounds encasing the urn and the embers. Little is known about these early stupas, particularly since it has not been possible to identify the original ten monuments. However, some later stupas, such as at Sarnath and Sanchi, seem to be embellishments of earlier mounds. The Dhamek Stupa was built in 500 CE to replace an earlier structure commissioned by the great Mauryan king Ashoka in 249 BCE, along with several other monuments, to commemorate the Buddha's activities in this location. Stupas originated as circular mounds encircled by large stones. King Ashoka built stupas to enshrine small pieces of calcinated bone and other relics of the Buddha and his disciples. An Ashoka pillar with an edict engraved on it stands near the site. The Dhamek Stupa is said to mark the spot where the Buddha gave the first sermon to his first five Brahmin disciples after attaining enlightenment, "revealing his Eightfold Path leading to nirvana". In several of the ancient sources the site of the first sermon is mentioned to have been at a ″Mriga-dayaa-vanam″ or a sanctuary for animals.. The last royal endowment at the site is dated to about 12th c. CE, after which the location of the Mrigadayavanam seems to have been lost even to the devout. The stupa was enlarged on six occasions but the upper part is still unfinished. While visiting Sarnath in 640 CE, Xuanzangrecorded that the colony had over 1,500 priests and the main stupa was nearly high. In its current shape, the stupa is a solid cylinder of bricks and stone reaching a height of 43.6 meters and having a diameter of 28 meters. It is the most massive structure in Sarnath. The basement seems to have survived from Ashoka's structure: the stonefacing is chiseled and displays delicate floral carvings of Gupta origin. The wall is covered with exquisitely carved figures of humans and birds, as well as inscriptions in the Brāhmī script. The Dhamek Stupa features in the 2014 Indian mystery thriller novelThe Emperor's Riddles by Satyarth Nayak.