I'm curious about this. Peninsular Malaysia is situated at the geographic center of the Malay archipelago and also the entire Southeast Asian region. The region is relatively safe from natural disasters. The climate is hospitable. We've not had destructive wars in our history.

Why does does Peninsular Malaysia have so little ancient ruins? You compare to Cambodia, Thailand, Laos, Myanmar, Vietnam and Indonesia. We don't have anything notable compared to our neighbours to tie us back to ancient times. Why is that so?