Nature is magnificent and full of wonders, not only evident in the rustling of the wind and the changing of seasons, or in the creatures that breathe and move. Even stillness, like a piece of rock, holds mysteries waiting for us to explore.Ms Sandie Ho, Assistant Curator of the Hong Kong Science Museum presents the fascinating topic of 'Rock Cycle', explaining the process of rock formation. She brings along several different types of rocks, allowing the audience to have hands-on experience and deepen their understanding.