system
Given the following post, respond as if you're commenting on Reddit:
human
[netflix Castlevania] How did Dracula manage to hide sevearl hundreds of meters of underground castle under Gresit without anyone knowing?

The catacombs under Gresit where Alucard is burried are massive, Trevos and Sypha falls for atleast a hundred meters if not more, this place is absolutely massive, and its mostly hollow, with giant open halls.

Did he just build them and the city grew up on top of them? he cant have built it for Alucard , he only rebelled against his father after his mother died, thats only a year before Trevor finds him there. (Tho the legends of the savior beneith Gresit is ancient, did Dracula burry him there becasue he found it funny that it would now fit the legend or what?)

Or did Dracula teleport it into place specificly to hide Alucard there?
gpt
They've clearly been down there for a very long time, judging from their fragility. Option A makes the most sense: they're older than the city.

Building cities on top of ruins isn't unheard of in real life, by the way.