Later, we learn of a song of Mount Abora which is chanted by a "damsel with a dulcimer," and the speaker claims that if he could revive her song within him he would "build that dome in air."  
The prose preface to this work quotes ten lines from "The Picture," which end with a passage about some "fragments dim of lovely forms" which come "trembling back, unite, and now once more / The pool becomes a mirror."  The poem itself mentions "dancing rocks" which are "vaulted like rebounding hail" or "chaffy grain beneath the thresher's flail," which emerge from a "mighty fountain" forced from a chasm.  In a less tumultuous section, it refers to some "gardens bright with sinuous rills" where "many an incense-bearing tree" are blossoming.  Later, we learn of a song of Mount Abora which is chanted by a "damsel with a dulcimer," and the speaker claims that if he could revive her song within him he would "build that dome in air."  FTP, name this poem which features a sacred river named Alph and a "stately pleasure-dome" decreed in Xanadu by the titular Mongol ruler, a work by Samuel Taylor Coleridge.
The prose preface to this work quotes ten lines from "The Picture," which end with a passage about some "fragments dim of lovely forms" which come "trembling back, unite, and now once more / The pool becomes a mirror."  
"Kubla Khan"