HAC_Vacancies_List_2023.pdf Posted by Rick G. · May 8, 2023 · 584 KB Download Notes: High Adventure vacancies for trips in 2023 as of 23 April 2023, including 2023 NCAC Sea Base and Lenhok'sin backpacking crews; six Philmont crews , three Sea Base crews, two Northern Tier crews and one crew each to Summit and Lenhok'sin.