"What can science reveal of the nature of man and the universe of which it is a part? This is the quest of the Snark."
(Philo M. Buck: "Science, Literatur, and the Hunting of the Snark", College English, Vol. 4, No. 1, Oct., 1942)

I too think, that Carroll's poem is about science. It also is about the challenges of scientific research, to beliefs. This depiction of the Snark hunting party conducting a land expedition is one of Henry Holiday's illustrations to Lewis Carroll's The Hunting of the Snark (1876).