MAMMOTH HOT SPRINGS, Wyo. — Yellowstone National Park saw its busiest May on record last month, reporting that it hosted 570,272 recreation visits. Year-to-date figures for 2026 also indicate a continued upward trend in park attendance. So far this year, Yellowstone has hosted 773,653 visits, an increase from the 762,672 visits recorded through the same period in 2025, which itself was an increase of more than 40,000 from the 719,127 seen in 202…