With its detailed color identification guide, ""The Lake Huron Rock Picker's Guide"" tells you everything you need to know about rock hunting on Lake Huron - what kind of stone you've found, how old it is, where it's from, how it got there, and how it was formed. It also includes the rules for rock collecting on the shores and excellent practical tips to make your rock hunting successful. Kevin Gauthier and Bruce Mueller, authors of the popular guides to rock hunting on Lake Michigan and Lake Superior, have delivered again, making the Number 1 guide to rock collecting on the Lake Huron shoreline.