The Mazamas offers a variety of classes for all ability levels. Learn new skills in mountaineering, rock climbing, first aid, ski mountaineering, and more.
Mitsu Iwasaki, Executive Director
Mitsu Iwasaki joined the Mazama team in September of 2019. Somewhat restless and inspired by exploration, Mitsu’s identity is shaped by a life-long journey of adventure on high mountain summits and enduring love for wild places. He has well over 1,500 nights under the stars and countless days traversing our wild and iconic places.
Mitsu’s career in the outdoor industry spans 30 years with broad experiences ranging from wilderness instructor to leading nationally recognized non-profits. Mitsu brings his experience building, evolving, and operating organizations; engaging stakeholders and developing resources; and building and delivering programs and curriculum.
When not behind a desk, he can be found running, climbing, and skiing throughout our great Northwest and beyond.
Sarah Bradham, Operations Director
Sarah Bradham joined our staff in February of 2013. Sarah brings twenty years of experience in the nonprofit world to her work at the Mazamas, including extensive experience in nonprofit management, corporate relations, event management, database management, graphic design, communications, and marketing. Prior to the Mazamas, Sarah spent 14 years at Saturday Academy, 3 years at SageWalk, and a year at School-to-Work Alliance.
Sarah’s history with the Mazamas spans 17 years, beginning when she took the Basic Climbing Education Program (BCEP) in 2002 and fell in love with all the Mazamas had to offer. She jumped directly into committee work by joining the First Aid Committee in the fall of 2002, chairing the committee in 2004/2005, becoming a climb leader in 2007, being hired as the assistant Bulletin Editor in 2005, joining the Climb Committee in 2007, acting as assistant BCEP coordinator in 2008 and the BCEP Coordinator in 2009, and chairing the Education Committee from 2009–2011. Sarah was jointly awarded the Parker Cup in 2009 for her efforts to standardize the BCEP curriculum.
During her downtime, Sarah enjoys trail running, backpacking, and climbing. She most recently served on the board of Girls on the Run of Portland Metro from 2015–2019 and was the Board President from 2018–2019, leading the organization through an Executive Director transition. She also teaches Wilderness First Aid courses with Base Medical.
Mathew Brock, Library & Historical Collections Manager
Mathew Brock joined our staff in February of 2015. Mathew holds a Master of Library and Information Science from the University of Washington and a Bachelors of Social Science from the University of Alaska Southeast. Mathew is overseeing a reinvigoration of the Library and Historical Collection with an eye towards building awareness, improving library usage, and storytelling. Mathew also manages a group of volunteers, produces articles for the Bulletin, and social media posts for both the Mazamas Facebook and Instagram pages. Since completing his MLIS in June of 2014, Mathew has been volunteering for the Oregon Historical Society. Currently, Mathew is the Oregon representative for the Northwest Archivists, a regional association of professional archivists.
Mathew first climbed South Sister as a teenager. Later, while living in Alaska, he developed a love of hiking, backpacking, and rock climbing. More recently he completed BCEP in the Spring of 2016 and is getting back into rock climbing. Besides being outdoors, Mathew enjoys traveling, cooking, and building things.
Claire Nelson, Youth & Outreach Program Manager
Claire holds a Masters Degree from Portland State University in Leadership for Sustainability Education, and a BS in Environmental Studies from Oberlin College. She has focused her studies and work on incorporating social justice curriculum and equitable practices into environmental education.
Claire manages the Mazama Mountain Science School, Adventure WILD! Day Camp, Youth Outreach programming, and is spearheading diversity, equity, and inclusion initiatives at the Mazamas. Prior to the Mazamas, she worked as the West Coast Program Manager for Big City Mountaineers, Program Manager for Explore Austin, and as a certified climbing guide with KAF Adventures, Outward Bound, and Outpost Wilderness Adventures and holds an SPI certification from our friends at the American Mountain Guides Association.
Laura Burger, Development Coordinator
Laura Burger joined the Mazamas staff in April of 2015. Her responsibilities include grant writing, donor management, and customer service. Prior to joining Mazamas Laura worked in event and conference planning at University of Oregon and OHSU, special events and cellar work at Yamhill Valley Vineyards, and administration at West Coast Coffee Roasting Company.
When she’s not working Laura enjoys skiing, hiking, camping, yoga, reading, and running with her dog Molly.
Kelsey Shaw, Member Services Administrator
Kelsey Shaw joined the Mazamas team in October of 2017. Kelsey oversees membership services with a focus on building and maintaining positive relationships with guests, members, and volunteers. Kelsey also contributes to the management of the member database, class and program registration, and provides administrative support for committees and other groups using the MMC. Kelsey is excited to be a friendly and competent resource for all that frequent the MMC. In her spare time Kelsey enjoys yoga, hiking, camping, traveling, and playing Futsal.
Molly Mosenthal, Youth Program Coordinator
Molly joined the Mazamas in March 2017 as the Adventure WILD Camp Manager. After a fun-filled summer of camp, she decided she didn't want to leave, and came on board as the Youth Programs Coordinator. She continues to manage Adventure WILD, coordinate the Mazama Mountain Science School, and work with our other youth programs. She comes to the Mazamas with a BA in Geography & the Environment and a BA in Spanish from the University of Denver. Molly has spent time adventuring, studying, and teaching environmental education across North and South America and Europe. In Colorado, she was Assistant Field Coordinator with Thorne Nature Experience before leaving the sunny Colorado Plateau for the not-so-sunny Northwest. Here in Portland, she worked with Community Energy Project as the Weatherization Community Educator. In her spare time, she enjoys skiing, hiking, swimming in chilly mountain waters, and letting the wind blow her in the direction of her next endeavor.
Maggie, Chief Morale Officer and High Commissioner for Tail Wagging
Maggie can often be found greeting visitors to the Mazama Library or wandering the MMC in search of pets, ear scratches, belly rubs. When not fulfilling her official duties, Maggie enjoys hiking, running on the beach, napping in the sun, and chasing squirrels out of the garden.
Quigley, Minister of Culture
Quigley likes to nap, get lots of belly rubs, and go on super muddy hikes. You can usually find him quietly napping in Sarah's office. He plans to climb South Sister this summer so he can become a Mazama!