Hindu monuments likely existed then, but they've not survived, Possibly as they weren't created of stone. A handful of photographs of recognizable Hindu deities and votive pillars have survived from about a hundred bce to two hundred ce. Hindu temple building began in earnest from the 5th century ce in https://hanumanmandiradelaide.com.au/shani-dev-mandir-a-spiritual-hub-in-south-australia/