Fig. 3: Spatial relationships between networked TARs.
From: Networked configurations as an emergent property of transverse aeolian ridges on Mars

Hexagonal networks (H) are commonly found surrounded by rectangular networks (R) where primary/secondary ridge amplitudes and orientations are still visible (a ESP_024266_1830, b ESP_027708_1815, c ESP_017661_1545, d ESP_064811_1670).