Um er-Rasas is surrounded by, and dotted, with remains of ancient agricultural cultivation, including terracing, water channels and cisterns. The Outstanding Universal Value of the site resides in the ...

Sampled areas (Cathedral Hill and Mat Mound Massif) are highlighted by white ellipses and respective core numbers are shown. Positions of other nearby hydrothermal seepage sites are indicated by red ...

Dashed ellipses represent the 95% confidence interval for each group, while the proportion of variance explained by PC1 and PC2 is indicated on the X and Y axes, respectively. (A) Cobb 430 jejunum, (B ...