In just five short lines, a speaker sits and does nothing, and the poem turns that stillness into something strange. The first two lines set up a simple match: "I sat all morning / and the land sat there." The land is treated as if it were sitting too, as though person and landscape were keeping each other company, or maybe waiting each other out.
The last two lines shift things. After a whole day, "my very eyes / began to sit." It's an odd, surprising phrase. Eyes usually move and look, but here they settle and go quiet, as if the act of watching has turned into just being. The speaker seems to dissolve a little into the place.
The title, "Settler," plays on this. A settler claims land, but this one simply stays put until the word "settle" feels literal. The mood is calm, patient and slightly dreamy, with a hint of humor in how plainly it's said.