In Anne Rice's world, vampires just rest under the earth and hibernate and emerge stronger. It's a good place to stay safe from fire. Every vampire in the books who was underground during Akasha's rampage in 1985 survived, and Lestat recovers from his burn injuries during his 20th century hibernation period.
However, in the real world, things can catch fire underground:
Zombie Fires; Holdover Fires
The British Columbian fire season is in full swing right now:
āZombie firesā smouldering under the snowpack in Canada since last winter have ignited as the weather heats up, contributing to an intense start to the wildfire season in large parts of Canada, scientists and fire experts say.Ā
Scientists are studying the rise of the phenomenon, also known as overwinter or holdover fires, where the soil catches alight during summer and burns extremely slowly underground during the subsequent winter.
A satellite image from Russia's Roscosmos Space Agency shows forest fires in Eastern Siberia, July 21, 2019.Ā Roscosmos Space Agency via AP
Coal-seam fires can be divided into near-surface fires, in which seams extend to the surface and the oxygen required for their ignition comes from the atmosphere, and fires in deep underground mines, where the oxygen comes from ventilation.
Many coalfields in the US are subject to spontaneous ignition.Ā
Fugging Pennyslvania is apparently the place with most coal seam fires in the US:
burning since 1962 when someone ignited the trash on top of the dump which was above the abandoned mine pit.
Depths of up to 300 feet (90Ā m) over an 8-mile (13Ā km) stretch of 3,700 acres (15Ā km). Ā
Could continue to burn for 250 years.
All real estate in the borough was claimed underĀ eminent domainĀ in 1992 and condemned by the Commonwealth of Pennsylvania. Centralia'sĀ ZIP CodeĀ was discontinued by theĀ Postal ServiceĀ in 2002. Ā State and local officials reached an agreement with the then seven remaining residents on October 29, 2013, allowing them to remain in Centralia until their deaths, after which the rights to their houses will be taken through eminent domain.Ā As of 2020, only five residents remain.
If a vampire is smart they don't go into the earth in Australia or New Zealand.
Burning Mountain, New South Wales
Depth of 30 meters (100 feet)
Has been burning for ~6 millennia (six thousand years)
By Beruthiel at English Wikipedia - Transferred from en.wikipedia to Commons., Public Domain,
Darvaza gas crater/Door to HellĀ orĀ Gates of Hell, officially, theĀ Shining of Karakum
Burning natural gas field that's collapsed into a crater in Darvaza, Turkmenistan.
Hundreds of natural gas fires light up the floor and rim of the crater.
Engineers ignited the crater to prevent poisonous gases from spreading
May be starting to burn out now