Erica Nguyen

The guides were awesome!! They were very fun to hang out with and made the climbing experiences so safe and enjoyable.

By Meredith O. on April 14, 2026

Yarrow mountain and our guide were a perfect fit for us. We get to spend a lot of time in this area, and having a reliable source for finding and enjoying all of the outdoor activities is exactly what we were looking for. We hired Erica for our two college aged sons. It was their first time outside of the climbing gym. Erica was a joy to hang out with, and she provided excellent guidance for both of them. They each got to climb 4 different routes, and they received excellent tips and training in climbing and belay. I look forward to using Yarrow Mountain again in the near future.

By Nelson R. on August 07, 2025

Our first rock climbing experience was phenomenal! It was super special that Erica was available to introduce our 10-year-old daughters to rock climbing. She was patient, kind, and exceptionally knowledgeable. The equipment was in excellent condition and we always felt safe.

By Michael G. on January 06, 2025

Had a great day with Erica, who structured our climbing to improve the skills I identified. Diablo Canyon was a fun place to climb. Erica was patient and helpful as a guide. This was our first experience with YMGs; it won't be our last!

By Stephen C. on January 01, 2025

Great guide! Beautiful climbs!

By Nicole E. on November 13, 2023

Tommy was an excellent guide - super knowledgeable, and able to adjust class based on the participants' needs and experience. He was very good at regularly checking in to assess how we were absorbing information and what would work best. I appreciated his attentiveness to our goals. I learned so much useful information, and would highly recommend taking these courses to improve safety and ability to troubleshoot different situations outdoors. Experience will definitely cement your skills but you can learn so much in a few hours that might take several years of climbing to learn, and often you wouldn't learn some of the skills at all without being taught.

By Kim N. on August 13, 2023