ヨセミテ渓谷でのマネージメントファイア

28日、Bridalveil Fall駐車場の北側38エーカーほどの下栄えが燃やされる予定です。
Half Dome NetCamで空気が黄色く見えているのは、このためでしょうか？
Yosemite Valley Prescribed Fire Notification　：June 28, 2007
The National Park Service is planning to conduct prescribed fire activities in the Yosemite Valley area this week. Weather and air quality permitting, this burn will begin on June 28. Ignition should be completed within one day, with mop-up occurring on Friday to minimize smoke for the coming weekend.This project is 38 acres in size, located between Southside Drive and the Merced River, just north of the Bridalveil Fall parking lot.