Parked in Darangan Cl, Waterfall and took an access track to the firetrail running parallel to the Princes Hwy. Headed north to the Sebastopol Trig Firetrail area. The area appears to be a former quarry and very muddy after rain. We went to the coordinates -34.119899749, 150.990402221 as described as the precise location for the Sebastopol Trig Station but there is no marker or concrete pillar. The location has no sign that the marker existed. We found a lot of rubbish dumped including what appeared to be piles of asbestos - luckily for us it has rained and soaked it. No marker or summit.