Celebrated annually on December 11th, International Mountain Day is an international day of observance to highlight the important role that mountains play in the lives of people and our planet. On December 20th, 2002, the United Nations designated December 11th as International Mountain Day. This years theme was biodiversity, which encompasses the variety of ecosystems, species and resources that mountains provide. “Thinking Like a Mountain” is a term coined by Aldo Leopold in his book A Sand County Almanac and served as the inspiration for the first International Mountain Day Event here at Radnor Lake State Natural Area.
