Recently, some whackjobs posted on Facebook a pile of apologetic faeces, claiming that science had validated their cretinous assertions about the mythical lava troll and its fetish dungeon purportedly situated in the Earth’s core.
Someone ended up becoming really butthurt when I pointed out that this was garbage.
Apparently the individual in question who threw a Karen fit over my pointing this out, was unaware that geophysicists could detect any hollow space in the Earth’s core simply by using seismology. Funny how no such hollow has ever been detected, or reported in the relevant peer reviewed scientific literature.
There’s also the little matter to factor in here, that the pressure in the Earth’s core is 3.6 million atmospheres (a useful elementary introduction to the relevant concepts can bhe found here). the only way a hollow could exist there, is if it was filled with gas at the same, or greater, pressure, otherwise the hollow in question would collapse and be crushed out of existence by the pressure of the surroundng material.
There’s also the little matter of how anything sentient could possibly exist in an environment where the ambient temperature was over 5,000°C. At this temperature, gold and platinum are no longer solid metals, but gases. Rhenium, one of the most heat resistant elements in existence, is a liquid, and becomes a gas if the temperature is raised to 5,630°C. For that matter, carbon becomes a gas at 4,300°C, and organic compounds are reduced to their constituent elements at considerably lower temperatures than this, so we won’t be seeing any organic chemistry under these conditions as far as I can tell. 
Of course, the usual suspects will wibble on about “souls” as if these entities actually exist, but even if this assertion turns out to be something other than the product of the rectal passages of mythology fanboys, why would a disembodied soul have any need for thermal properties of any sort if, as the usual suspects assert, this entity is “immaterial”? Indeed, the whole point of erecting the “immaterial” assertion by mythology fanboys, is to permit all sorts of fantastic interactions to become something other than the province of fanciful imagination, and to dismiss all the usual constraints applied by physics, chemistry and biology.
Yet at the same time, the same suspects among the mythology fanboys seem to think that all of the usual human experiences mediated by physics, chemistry and biology would somehow affect this “immaterial” soul. Special pleading and fabrication at its most egregious.