Digging deep for youth mental health - The Big Dig 2025. Hosted at WA Limestone Quarry in Mandogalup on Saturday 25th October, The Big Dig 2025 promises to be even bigger! Teams will take on the challenge to dig a 1-metre-deep trench over a 24-hour period, all in the name of raising vital funds for youth mental health. Every dollar raised for zero2hero will help deliver programs that empower young heroes to become mental health leaders and help prevent suicide in Western Australia. zero2hero is a WA based youth mental health charity that educates, engages and empowers thousands of young people a year to support and maintain their mental health and prevent suicide in their communities.