AusBonsai

Have done a couple of visits now to a site west of Mackay this is what I hunt for now, found it completely by accident one day, so;
Rock found on site in this format split it with a small mattock coz it was a little boring as it was and................. emptied out the volcanic silt that was still inside the bubbles The half on the left still has a thin film over its half but is hollow and has been emptied out and the end results...................magic

ah yes.. I recognise these. Fossilised exhaust manifold from an old Holden

Exactly what I was thinking! Looks like it flows as well as the manifolds off my 138 too

Wow! Pots a volcano made!