Final answer:
Mount St. Helens is located in the Gifford Pinchot National Forest. The 1980 eruption led to primary succession due to the creation of entirely new soil surfaces.
Step-by-step explanation:
Mount St. Helens, an active volcano in the United States, is located within the Gifford Pinchot National Forest. The 1980 volcanic explosion of Mount St. Helens was a significant geological event that dramatically altered the landscape. The forests were demolished by the eruption and replaced with volcanic debris, forming new soil devoid of the previous ecosystem. This event would lead to a process known as primary succession, where a newly formed land devoid of life begins to be colonized by living organisms starting from scratch.