![Happy Valley Placer Co. mining camp near Eldora 1892](https://westernmininghistory.com/images/town_gallery/eldora_CO_1892_111921.jpeg)
Photo Description
View of the Happy Valley Placer Co. mining camp in the Grand Island Mining District, Boulder County, Colorado with tents and a buggy. John H. Kemp leans on the fence to the left; Engineer August Mathez stands with a transit instrument and tripod and John Younglove stands behind him. Two men hold rifles.