Does Miss Esquivel know who erected the dome or why? Such information may help in determining the "how" and from there how to remove it.
Not to mention, if we don't know why it's there we ought to consider the possibly that whoever put that dome there had a good reason. Perhaps they were containing something dangerous, something that absolutely could not be allowed to get out, and the inhabitants of Miss Esquivel's town were unfortunate collateral damage.
[Narvin remembers the original Chancellor Narvin, his alternate self, and his single-minded drive to complete and open the Eye of Harmony, which had been left unfinished, sealed shut by that universe's Rassilon. And how the alternate Gallifrey was almost wiped out when his other self finally did manage to open the Eye and let loose the incorporeal monsters that Rassilon had trapped inside.]
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Not to mention, if we don't know why it's there we ought to consider the possibly that whoever put that dome there had a good reason. Perhaps they were containing something dangerous, something that absolutely could not be allowed to get out, and the inhabitants of Miss Esquivel's town were unfortunate collateral damage.
[Narvin remembers the original Chancellor Narvin, his alternate self, and his single-minded drive to complete and open the Eye of Harmony, which had been left unfinished, sealed shut by that universe's Rassilon. And how the alternate Gallifrey was almost wiped out when his other self finally did manage to open the Eye and let loose the incorporeal monsters that Rassilon had trapped inside.]