Final answer:
Chris McCandless entered the Alaskan wilderness during the spring, seeking a life of simplicity and self-discovery reminiscent of Thoreau's 'Walden'.
Step-by-step explanation:
Chris McCandless ventured into the Alaskan wilderness during the spring season. Krakauer's narrative nonfiction Into the Wild chronicles McCandless's journey as he strives to live a life akin to Thoreau's ideals expressed in Walden, symbolizing a rejection of societal norms and a return to nature.
McCandless's Alaskan adventures are a modern parallel to historical expeditions, such as the Lewis and Clark journey, where individuals grappled with the immense challenges and revelations provided by the American wilderness. The season of McCandless's journey is pivotal, as it reflects on the natural cycle of renewal and growth, a metaphor for his own quest for personal enlightenment.