Send the following on WhatsApp
Continue to ChatThorn Lake Map - Washtenaw County, MI https://www.yellowmaps.com/usgs/topo.cfm?map=mi-1614790-thorn-lake
Thorn Lake Map - Washtenaw County, MI https://www.yellowmaps.com/usgs/topo.cfm?map=mi-1614790-thorn-lake