Just as the Blackfeet Nation is taking steps to guard its members against Covid-19 by closing access to the eastern half of Glacier National Park, the Havasupai Tribe is banning outside entry to its reservation, and Grand Canyon boaters have been asked to respect that.

Fears that the coronavirus pandemic could cripple their cultural knowledge by striking their elders prompted the Blackfeet Nation to effectively close the eastern side of Glacier National Park through the summer and into the fall.

How much do you know about national park botany? Test your tree-plant-flower knowledge with this latest national parks quiz and trivia piece.

Though some states are seeing spikes in Covid-19 cases, more parks are reopening access to the public. Death Valley National Park has reopened more campgrounds, Zion National Park plans to resume its shuttles this week, and Canyon Mouth Park at Little River Canyon National Preserve is back in business.