A mountain is an object of primitive intuition and starting point of imagination for a poet Pak Doo-jin. Memories of mountains in the poet`s hometown must have been a catalyst that stimulated his poetic imagination, providing numerous images that harbored essential meanings for him. The research examines how the poet`s experience of the hometown mountains during the childhood years formed poetic elements and how the elements were visualized in his poem. The research also examines what the poet pursued through images of mountain, and attempts to illuminate root of the poet`s consciousness and his world of poem-writing, centered on the symbol of mountains that are present in his poem on nature. Hyesan`s (pen name of Pak Doo-jin) poem departs from images of a mountain. Mountain Cheongryong, buds of arrowroot, bushy young pine trees (Dabaksol) and windflowers on the village hills and sound of mountain birds filled the young poet`s heart with delight. The poet was inspired by the mountain and visualized themes of poem through objects he found in mountains. In Hyesan`s poem, a mountain stands for the whole world of living things, a space charged with primitive force of time as well as the poet`s aspiration. These represent a different kind of principle of life and resistance from Jeong Ji-yong, Pak Mok-wol or Cho Ji-hoon who portrayed the nature with sad and sensual feeling, as a peach blossom heaven, as symbol of linearity and calm, respectively. Pak Doo-jin`s symbolism instilled his poem with vital feelings. Pak Doo-jin perceived the nature as a symbolic being that materialized ultimate relationship between the mankind and the god, eternal life and salvation, embodied principles of life, and the poet verbalized his perception with metaphors and symbols. However, for the poet, nature provided materials to visualize his understanding of the world, and the nature itself was not a main theme of his poem. His poem is significant in that its bright and powerful symbol of mountain evoked masculine spirit and deepened religious faith in the history of Korean modern poetry.