The proposed Nicaragua Canal. The jetty at Greytown. Castillo, looking up the San Juan -- old Spanish fort on the left, rapids to the right. Corduroy foundations for railroad fill across the swamp. The market in Granada, Nicaragua. Mouth of the San Francisco River. Suction dredges.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner