Jeeps, offroading , hillclimbing , dunebuggies and Sand dunes – Gaylord Couple , Don and Debbie Campbell spent the first 10 summers together driving to Silver Lake Sand dunes. Over the ten years Don built several rail dunebuggies. This weekend they returned to Silver Lake and camped in the Silver Lake State Park for the first time in 30 years. This picture shows Don and Debbie this morning with the sand dunes in the background. But this time they rented Jeeps and enjoyed the afternoon climbing hills in comfort.