Its the plane that is the subject
The sentence that includes an allusion is: Like a Grinch, he hated the holidays.
Because it refers to Grinch, a character from a well-known film, who hated Christmas.
Ted Kerasote introduces the setting in the first paragraph of his essay. He describes the scene to the reader, that the action is taking place in the Northeastern corner of Yellowstone Park in the hills above Soda Bottle Creek. He describes that it's an isolated area, if you left one road you would not come across another one for quite some time.
When a poet writes an emotional, rhyming poem, she can call it a lyric poem.
Lyric poems have a musical rhythm, and their topics often explore romantic feelings or other strong emotions. You can usually identify a lyric poem by its musicality: if you can imagine singing it, it's probably lyric. In ancient Greece and Rome, lyric poems were in fact sung to the strums of an accompanying lyre. It's the word lyre, in fact, that is at the root of lyric; the Greek lyrikos means "singing to the lyre."
https://www.vocabulary.com/dictionary/lyric%20poem
