Hindu monuments likely existed then, but they've not survived, perhaps since they were not designed of stone. A number of photographs of recognizable Hindu deities and votive pillars have survived from about a hundred bce to 200 ce. Hindu temple construction began in earnest with the fifth century ce in https://hanumanmandiradelaide.com.au/lord-shani-dev-hawan-ceremony-at-hanuman-mandir-south-australia/