A brief wander into an area of gold mining in years past. You're an easy drive up past St George's church of about five minutes. Should be fine for 2WD. We're looking at ruins today.
From: https://www.appleisleprospector.com/the-mathinna-goldfield/
The Mathinna goldfield started, like many others, with the discovery of alluvial gold, this time in Black Horse Gully. The area contains one of Tasmania’s largest gold mines, the New Golden Gate, which had a total (historical) production of over 260,000 ounces (~8 tons) of gold. The area is riddled with abandoned mines, prospects, and old workings, and is mostly crown land, meaning fairly easy access. Unlike other areas in Tasmania, the bush is fairly open and easy to walk through, though the grades of the hills are steep. While I have not personally found, nor heard of anyone finding significant nuggets in the area recently, nuggets were found historically in the alluvial areas, and there are many historical artifacts still lying about. Valuable coins such as sovereigns have been found in the area in modern times.