Over the majority of the length of the TBR, the tracks ran straight and true over relatively flat and unobstructed land. This was particularly true of the first 50-60 kilometers of both sides of the line. Compared to certain sections of the TBR, these portions were completed rapidly and without complications. On the Thai side, the first cuttings had to be made at Khao Poon beyond which the terrain rose gradually to the Wang Po Trestle area.
It was a at Hellfire Pass that the terrain became a major factor.
[See Section 8 for a more detailed accounting of the terrain and engineering issues]
This Gallery presents photos that were typical of the work all along the TBR. While placing ties (sleepers) and rails was obviously the most common task, the harder work of building the TBR as 1) creating an embank for a level roadbed; known as ‘fill’; 2) Cutting through the limestone outcroppings that obstructed the path; 3) building bridges over small creeks and ravines. Five large bridges and a like number of trestles were also required.