5. Discussion Results from the DSAS analysis show how this coastline is geomorphologically an active area. The average retreat rate calculated in the period from 1978–2001 was −0.25 m/yr. More specifically, in the three sectors, we can summarize the following outcomes. The Trave sector shows the highest rate of cliff retreat, in the period from 1998–2007, where the mean is −0.72 m/yr (almost three times higher than the average retreat calculate in the whole area).