RETIRED archaeologist Dr Hamid Mohd Isa pointed to a huge boulder covered in ash that looked almost like clay, and exclaimed: “That is evidence of the Toba volcanic eruption 74,000 years ago.”
It spewed some 3,000 cubic meters of rock and ash and travelled all the way across the Indian Ocean to Kelantan and to present day Kota Tampan in the Lenggong Valley, a township located some 100km from Ipoh city in Perak.
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Lenggong Valley
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