Only about 2,000 or 3,000 years ago that little piece of land currently known as "Central Park" (the one in Manhattan) was enveloped in a glacier about 2,000 feet thick.
That glacier vanished into thing air about 2,000 years before the advent of the internal combustion engine.
To be honest about that glacier around Central Park, around 12,900 years ago...it melted in a fairly quick fashion (maybe less than a week or two) and was part of the sea-level rise (200 to 300 feet across the globe). No one even today, can say how the glacier came to be there, or how it dramatically melted so quickly (odds are heavily in favor of a meteor hit).
“Only about 2,000 or 3,000 years ago that little piece of land currently known as “Central Park” (the one in Manhattan) was enveloped in a glacier about 2,000 feet thick.
That glacier vanished into thing air about 2,000 years before the advent of the internal combustion engine.”
Please proofread before posting! Your two sentences are partially contradictory. You say that as recently as maybe 2000 years ago there was a glacier about 2000 feet thick which disappeared 2000 years before advent of the internal combustion engine which happened well under 2000 years later. You seem to have no concern for accuracy. It takes a long time for 2000 feet of ice to melt.