Anyone who's read, or even at least seen the movie adaptations of The Lord of the Rings can attest to the incredible detail made accessible for the reader/viewer. Tolkien's linguistic approach has been the stuff of criticism and debate over the years. Some find his use of language haughty and too "poetic" rather than prosaic.
Yet, despite which end of the conversation you fall on, there's no doubting the efficacy of Tolkien's works—otherwise, we wouldn't have the epic blockbusters we've come to know and love today (and may I add, a dazzling sight of Orlando Bloom as Legolas).
Tokien's language may be reflective of the Modernist writing of the time as he obviously leaned towards aestheticism. For any aspiring writer, one of the most famous tips to remember is to 'show, and not tell'. Or in other words, use descriptive rather than imperative language. This way, the reading experience becomes richer and more involved; the imagination able to run amock.
Tolkien's works remind me of this aphorism; a master at 'showing' rather than telling, his 'poetic speak' extended a certain difficulty—if not creativity—to his works, easily observed in this excerpt:
“All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not reached by the frost.
From the ashes a fire shall be woken,
A light from the shadows shall spring;
Renewed shall be blade that was broken,
The crownless again shall be king.”
—The Fellowship of the Ring