"Keep close to Nature's heart ... and break clear away, once in a while, and climb a mountain or spend a week in the woods. Wash your spirit clean." -- Scottish-American natural John Muir
원문출처 : https://www.cnn.com/travel/article/camping-safety-tips-covid-19/index.html
원문출처 : https://www.cnn.com/travel/article/camping-safety-tips-covid-19/index.html