Explore a network of trails through a wooded marshy wetland, sprinkled with poems and quotes on small placards along the way.
https://github.com/davepinch/pinchy.cc/blob/master/content/sites/wta.org/go-hiking/hikes/farrells-marsh-wildlife-area.md
There is strong evidence that the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics.