Many of the words in this crossword puzzle are one letter too long, and won’t fit in the space provided. You’ll have to extend these words into the black squares. An entry may begin or end in a gray square. When the puzzle is complete, the letters in the gray squares, read from left to right and top to bottom, will spell out a quote by John Muir.
The HTML5 version works, but alas, you can't put any letters in the black squares. Ditto for the Across Lite file. I think the PDF is the way to do this time. However, if you are determined to do it on a screen, I'd recommend solving it in the JPZ format (be sure to grab Crossword Solver, too).
As another alternative, my man Alex Boisvert came through with another online solver, as well.
However you choose to solve it, I hope you enjoy it.
Share the puzzle. New one on Monday.