Generally tracks are not closed - too many of them for Parks Vic etc to close. Some tracks will be closed because of forestry operations but these are not often. The tracks in most places do drain well but on the lower ground of gullies, creek crossings etc they can be a problem. There are plenty of places to detect around Laanecoorie Lakeside Park. Cays diggings, as I mentioned in the link Bigwave posted above, is the closest. There are shallow, deep, alluvial, elluvial, reef workings etc etc to try out and its a big area - you can even walk there from the park - a couple of kms away and there is even a run of diggers holes at the caravan park itself. Most tracks at Cays are 2WD friendly, if you are concerned about any minor tracks, just park up on the harder higher ground and walk to the diggings. Hill and Dale track drains very well and there are KMs of diggings very close to it that require no driving on the minor tracks. See Paula (park owner) as she has maps you can check, she has the directions for Cays and she did have copies for about $22 of Tully's 'Tarnagulla Goldfields' map book for sale.
