Protesters held the first Extinction Rebellion event in the Blue Mountains at Katoomba on Friday, June 7.
The protesters took their "die-in" to Civic Place where they lay down on the pavement surrounded by chalked outlines and messages raising awareness about climate change.
"This not only serves to attract attention but provides a powerful metaphor for the typically grave issues that are being protested," said spokesman, Zachary Paterson.
"In this case, the community gathered in the name of Extinction Rebellion (XR), a relatively new social movement formed to peacefully protest the global emergency that is climate change, biodiversity loss, and what scientists have named the 'Anthropocene extinction'."
Members of the public stopped to ask questions about the protest, some even taking part.
Extinction Rebellion was formed in London in 2018, and has spread globally, establishing a presence in Australia this year. For more information visit https://ausrebellion.earth/.