Outgoing National Museum of Australia director pushes for institutions to 'be honest' about Indigenous history

Mathew Trinca is the longest-serving director of the National Museum of Australia. (ABC News: Craig Allen)

Outgoing National Museum of Australia (NMA) director Mathew Trinca has urged historical institutions to "be honest" about the Frontier Wars that marked Australia's colonisation.

Dr Trinca on Wednesday announced he would step down as director at the end of 2023, opting not to seek reappointment after a decade at the helm of the institution.