On Thursday, April 25, four classes of 7th grade science students from Henkle Middle School will be visiting Fort Cascades Park on the Columbia River below Bonneville Dam for talks by Jeanette Burkhardt and Margaret Neumann of Yakama Fisheries and Mid-Columbia Fisheries, and Lloyd DeKay of the Ice Age Floods Institute. All together, 90 students will learn more in the field about fish, natural resources and Gorge geology. The presenters also volunteer in leading field trips for the Columbia Gorge Master Naturalist program.