Question

how do the lofty peaks represent the age of the Himalayas

Answer 1

Himalayas are lofty this means that they are taller. But for example aravali range is old as it is shorter because of wear and tear from many years.

Answer 2

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The lofty Himalayan peaks form a boundary or bastion against all the neighboring countries. The rings that we find in these peaks, and the ridges represent the age of the Himalayas. The Great Himalayas are known as young fold mountains, and their age can be detected by the rings. The Himalayas are still growing.