About John Kleinfelter

Owner John Kleinfelter has spent over 30 years living, working, and exploring in the Sierra Nevada. Simply stated, few others can equal the experience and depth of knowledge John has gained as a biologist and naturalist in the Sierra Nevada.

Assisted by life-long friends and colleagues, all associate YGS guides possess a similar expertise and as well, are easy going, extremely considerate and just down-to-earth very friendly people.

For use on History and-or Misson page (preferred)