Redwood National Park (wanda aka kafa a 1968) da California's Del Norte Coast, Jedediah Smith, da kuma Prairie Creek Redwoods State Parks (wanda ya samo asali daga 1920s), RNSP da aka haɗa sun ƙunshi kadada 139,000 (560 km2), kuma suna da tsoffin gandun daji masu tsananin zafi. An samo su gaba ɗaya a cikin Del Norte da Humboldt Counties, wuraren shakatawa huɗu, tare, suna kare kashi 45% na sauran gandun daji na bakin teku (Sequoia sempervirens) tsoffin gandun daji, suna da akalla 38,982 acres (157.75 km2). Waɗannan su ne bishiyoyi mafi tsayi kuma ɗayan bishiyoyi mafi girma a duniya.
Wadannan bishiyoyi sune mafi tsayi kuma daya daga cikin bishiyoyi mafi girma a duniya