Figure 7
Current intertidal zone in the area surrounding El Pichilín, Castilla beach, Matalascañas. (A) General view of the cut-wave platform. Scale bar: 50 m. The polygonal mats with upturned margins of individual polygons show an extensive open cracks network resulting in the saucer-shaped polygons. Locally, subcircular openings with upturned and curled margins of the thin mat can also be seen. (B) Detail of the NW sector. Scale bar: 2 m. (C) Detail of the SE sector. Scale bar: 1 m. (D) Cervipeda and undetermined tracks were preserving remains of the microbial mat trapped under their footprints. Scale bar: 8 cm. (E) Hominin footprints preserved on the polygonal mats. Scale bar: 20 cm. The photogrammetric orthomosaic (A) was produced using Pix4DMapper© (versión PIX 4D Cloud, https://www.pix4d.com/). (A) was obtained by a low-altitude programmed flight using an Unmanned Aerial Vehicle (UAV) on June the 12ht, 2020, 12 AM UTC. Photograph was collected by a multirotor DJI Phantom 4 + with a 4 k 20 Mpix RGB CMOS camera at an average height of 50 m above the ground.
