To get to the substance of the book you are going to have to surmount the considerable obstacle of its front cover.

The canal had a width of 50-90m ft, and as such, it formed a considerable obstacle for any attacker.

Internal divisions, which had developed during the previous years of struggle, softened but still remained a considerable obstacle.

As a returned emigrant he was listed as politically undesirable, a considerable obstacle in finding new music engagements.

Moreover, considerable obstacles lie in his path, whichever direction he decides to take.