The terrain in which the surface drill operates can have a significant impact on the choice and performance of the appropriate drill for the operation. Some of the key terrain-related factors that can influence drill selection are:

1. Type of Rock: The hardness, abrasiveness and cohesiveness of the rock affect the selection of the proper bit and hammer for drilling. Harder rocks may require more robust and powerful equipment, while more abrasive rocks can accelerate the wear of drilling tools.

2. Land inclination: If the land has a significant slope, it is necessary to consider the stability of the drill during operation.

3. Access and available space: Topography and space limitations can influence the type and size of drill chosen. In areas with restricted access or limited room to maneuver, compact rock drills may be required.