Question

Two places are intervisible when?

Answer 1

Answer:

: visible to or from one another : mutually visible two intervisible street crossings. intervisibility is defined as the ability to see in a direct line of sight from one position on the earth's surface to another, considering the intervening terrain.

Explanation:

The intervisibility is determined by drawing a line joining the stations / points say PQ and plot the elevations of the points and contours intersected by PQ as shown in Figure 18.3. If the intervening ground is found to be above A'B' line, the intervisibility is obstructed