After years of debate and controversy, a new permit system designed to limit crowds in three of Oregon’s most popular wilderness areas kicks off April 6. That’s when the first batch of permits required to enter the Mount Jefferson, Three Sisters and Mount Washington wilderness areas this summer go on sale at recreation.gov. If you’re hoping to climb South Sister, backpack to Green Lakes Basin or camp in the shadow of Broken Top, you’ll want to be prepared at 7 a.m. The most expansive permit system in Oregon’s history — and one of the most sweeping in the United States — was approved two years ago but delayed until the summer of 2021 due to COVID-19.