Obtaining deep Antarctic ice cores and accessing subglacial environments requires overcoming immense mechanical, thermal, and logistical engineering challenges.
The retrieved literature directly supports the claim that deep Antarctic ice coring and subglacial access involve extreme mechanical and thermal engineering challenges. Papers like [6], [9], and [11] explicitly detail the physical properties of deep ice, historical multi-decade drilling feats, and the rigorous thermal and mechanical hurdles associated with deep hot-water and mechanical drilling in Antarctica. Paper [3] also touches on the operational complexities of these clean drilling campaigns.