Figure 6
From: Walking on inclines: how do desert ants monitor slope and step length
Schematic drawing of the setup used in experiment 1 (side view). While foraging from the nest to the feeder the ants passed a narrowed section of the channel, within which they were recorded from above (x-y plane, see arrow). The inclination of this section could be altered from level ground (φ = 0°) to almost vertical (φ = 90°).