Around him loveliest lilies grew, Pale pink, and red, and white, and blue, And tints of many a metal lent The light of varied ornament. Gandharvas, changing forms at will, And Yakshas roamed the lovely hill, And countless Serpent-Gods were seen Where flowers and grass were fresh and green.

In plain words: The mountain where Hanuman stands is beautiful, with lilies of many colors and rocks shining with metals. Heavenly beings like Gandharvas (heavenly musicians), Yakshas (nature spirits), and serpent gods wander there.