Pot garden discovered in Calif. national park Rangers close popular section of park to visitors to destroy marijuana Gary Kazanjian / AP [Pic in URL] A ranger is shown in Crystal Cave during a marijuana eradication operation in Sequoia National Park, Calif. on Aug. 27. Authorities said the proximity of the pot plants to such a heavily trafficked tourist site was unusual and reflects a newfound boldness among growers, who are now planting marijuana near trails and access roads at an increasing number of parks. Aug 28, 2009 SEQUOIA NATIONAL PARK, Calif. - A section of this Sierra Nevada national...