Welcome to the Glass House Mountains

This series will take you to various locations in the area. You want to be prepared to bring the right TOTT's.
To receive the final location of this cache, you need to gather the information from displays inside the Glass House Mountains Visitor and Interpretive Centre during the opening hours.
Queensland Visitor Information Centres - Glass House Mountains Visitor and Interpretive Centre
The Centre is normally open between 9am and 4pm and closed on Monday's.
It is a great place to gather very useful information and updates about the area.
For the final coordinates (and potentially a hint), answer the following question:
For thousands of years, the Glass House Mountains provided a landmark for Indigenous people travelling here to pay respect and conduct important ceremonies and gatherings. Which important event was held here? (Word-Word)
You can validate your puzzle solution with
certitude.