They are active during the day. No wonder my troops stumbled on one. What an unlucky day!
Haa! This can't be helped. We seem to forget. Mambas are fans of the savannah. What, then, is Savannah? Any mixed woodland-grassland (i.e., grassy woodland). This is characterized by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses.
Barh! Giving up. A quick look around. This place is a perfect paradise for this species of spirit snake.