The longest human-made tunnel is the Delaware Aqueduct in the USA, 137 km long.
Exact record figures should be checked against a current authoritative record source, because rankings and measurements may be updated.
The longest human-made tunnel is the Delaware Aqueduct in the USA, 137 km long.
Exact record figures should be checked against a current authoritative record source, because rankings and measurements may be updated.
सबसे लंबा मानव-निर्मित सुरंग अमेरिका का डेलावेयर एक्वाडक्ट है, 137 किमी लंबी।
रिकॉर्ड के सटीक आँकड़ों को वर्तमान और आधिकारिक स्रोत से जाँचना चाहिए, क्योंकि रैंकिंग और माप समय के साथ अपडेट हो सकते हैं।
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