Taken from a website:

Mount Crieghton loop walk. Very popular as it gives you a bit of everything. This is a good walk to take a picnic lunch, with good views of Lake Dispute and Wakatipu from the top. The first part of the walk is to Sam Summers Hut The larger loop track is known as the Twelve Mile Loop Track.You can choose to walk to the hut and back, or continue around the loop. Medium fitness is required. This track winds through some beautiful native forest. Gold fever attracted many hopefuls to this area. It was mined periodically between the 1860's and 1930's. A large sluiced canyon, a tailrace tunnel and an old stone hut are a few of the relics to be found here. The track climbs through native beech forest, high above 12 mile creek gorge. The track crosses 12 Mile Creek behind the Sam Summers hut and climbs up to a ridge overlooking Lake Dispute.Here you have a number of choices: you can either follow the track back to the car park. Or you can follow the fenceline on your left ( past the open wetland area) down to Lake Dispute and out onto Glenorchy road.