The management of the canoe alone appears a work of unsurmountable difficulty, its breadth is so inadequate to its length.
"A Complete Account of the Settlement at Port Jackson"
Watkin Tench
The obstacles which seemed unsurmountable at first were but the first defects to be overcome, but with good understanding and proper placement these faults disappeared as quickly as the frost before the morning sun.
"Sixty Years of California Song"
Margaret Blake-Alverson
There is an unsurmountable barrier between the Americans at the little table in the corner and that jolly crowd of good and kindly people at the long one, for Mimi and Henriette and the little girl who has been so ill, and the French painters and sculptors with them, cannot understand either the language of these strangers or their views of life.
"The Real Latin Quarter"
F. Berkeley Smith