This fragment has a simple structure:
…with weather-bitten pillars on either side…
…preposition quality thing place…
The phrase weather-bitten is quintessentially gothic: harsh weather, wild animals, harm and danger. Consider the effect if Doyle had said weather-worn, which means almost the same thing but misses the dangerous-animal vibe that weather-bitten has.
Let’s write some fragments that use the same structure, and try to come up with some gothic-sounding qualities.
…preposition quality thing place…