Our Board & Staff
Our board, officers, staff, and leaders have a diverse range of experiences and qualifications including technical expertise in trail building and wilderness management, leadership in youth development programs, managerial and business foundations, and a strong commitment to environmental stewardship.
Our Staff
Agnes Vianzon
Founder and Director
Hello! I'm Agnes (she/they), I am a first-generation, queer filipinx, who grew up in the San Fernando and Simi Valleys of Southern California. I currently call Payahuunadu (Bishop) home. My immigrant parents took us on endless National Park roadtrips and that influence eventually led to an environmental studies degree from UCSB. I worked as an environmental planner for a few years in Santa Barbara County before joining the CCC AmeriCorps Backcountry Trails Program. Those 5 months living and working in Sequoia and Kings Canyon National Park launched the next chapter of my journey, 10 years of seasonal work - snowboarding and bartending on Mammoth Mountain in the winter and leading young people working trails each summer. Over those years, I led teams for the NPS, CCC, and Mammoth Mountain. My past experiences became the driving force behind my ambition to start ESCC and expand access and inclusion in the conservation world.
Honored to celebrate ESCC’s 10th Year! 2016-2026!!
Photo Credit: Joe Gibson
Shelma Jun
Finance Director
Shelma was born in Seoul, South Korea and raised in Southern California in an immigrant family. She is the founder of Flash Foxy, an affinity-based climbing organization that centers women and gender non-conforming folks, where she served as the Managing Director from 2014 to 2024. Prior to joining the Outdoor Industry, Shelma worked at nonprofits focused on Community Based-Design and Affordable Housing in NYC as well as a short stint as a Senior Tax Consultant at Deloitte.
Since 2017, Shelma has been a member of the board of directors of Access Fund, one the of largest national climbing nonprofit organizations, and currently serves as President of the Board. Shelma received her Bachelor of Arts degree from UCLA with a Business Economics degree with minors in Accounting and Political Science. She also holds a Masters of Arts in Urban Planning from UCLA with a focus on Community Based Development.
Shelma first fell in love with the Eastern Sierra on a snowboard trip with some friends in high school. Through snowboarding, climbing, trail running and hiking, she is constantly developing her relationship and dialogue with the land.
Photo Credit: Irene Yee
Larissa Fullmer
Development Director
Larissa Fullmer (She/Her/Ella) serves as the Director of Development, bringing over 18 years of experience in conservation leadership to her role. A Southern California native and former corpsmember, she is deeply committed to creating equitable pathways into conservation careers.Her extensive background spans sustainable programming, habitat and trail restoration, wildfire resiliency, and workforce development. She has held leadership roles with organizations including California State Parks, the California Conservation Corps, National Park Service and other Nonprofit Organizations. Through this work, Larissa has managed large-scale projects, supervised interagency teams, and mentored young adults entering the field. As Director of Development, Larissa combines her field expertise with strategic fundraising to secure significant funding and build lasting partnerships. She focuses on advancing programs that deliver substantial environmental and community impact, designing initiatives that balance community needs with long-term environmental stewardship.Larissa is honored to work with a team driven by passion, grit, and heart, empowering the next generation of leaders. In her personal time, she enjoys practicing yoga, creating music as a singer-songwriter, and adventuring on trails with her pup, Zula.
Our Board of Directors
Marisa Gierlich
Board Member
Marisa Gierlich began her career as a travel writer and guide, focusing on culturally and environmentally sustainable tourism. As a leader and Hiring and Training Manager for Backroads Active Travel and as a Coordinating Author for Lonely Planet, she managed and coordinated staff, content, and budgets on a global platform.
Having spent extensive time in the French and Swiss Alps and in her native California’s Sierra Nevada, she has a deep love for mountains and is dedicated to their stewardship. Her current position as the executive director of Access Mammoth.
Val McCampbell
Vice-Chair & Co-Founder
Val (they/them) has been involved in trail work and conservation for the past decade. They began their trails journey through the Backcountry Trails Program, spending five months in Kings Canyon National Park. Val has been with ESCC since the fundamental season and finds supreme joy in providing support, empowerment and resources to folks that are beginning their outdoor journey or continuing their path!
Stacy Corless
Board Chair
Stacy Corless is a longtime resident of Mammoth Lakes, CA. She has a background in nonprofit management and communications, and has worked to steward and protect wild places in the Eastern Sierra, as well as to create educational programs and opportunities for people to connect with and explore the mountains. One of her best summers in the Sierra was spent updating a backpacking guidebook for Wilderness Press; though she has to go to lots of meetings these days, Stacy gets outside as much as possible to hike, run and ski on the public lands around Mammoth and beyond.
John Matthew Newman
Treasurer
Matthew Newman was born in Hot Springs National Park and grew up surrounded by woods and water. He earned a Bachelor of Sciences in Accounting from the University of Arkansas at Fayetteville. While in college, he found a deep love for the outdoors in the Ozark Mountains and surrounding areas. Since graduating, Matt has serves as CEO of Athena Manufacturing, a 150 employee company in Austin, TX. Matt contributes to the team a wealth of financial knowledge and business experience.
Paul LaMartina
Secretary
Paul LaMartina is an attorney in the San Francisco Bay Area. Paul moved to California in 2010 to attend law school, and decided to stay after falling in love with California’s wilderness. Paul enjoys backpacking, climbing, and skiing throughout California.