"In the evening, no one having stopped, or objected to, my drawing and prying about, as they would anywhere else, I took the train to Panama - one of the last that ran over the old line of railroad, now most of it under the waters of the growing lake. From the car window I saw for the first time the tropical jungle, which I had never believed in - never believed that it could not be penetrated save with an ax or a machete; but it is so - and the richness of it, the riot of it, the tangled, somber mystery of it, incredible and endless." Joseph Pennell.