The five major east-west valleys that run from the low-lying coastal plains to the Judean highlands (the Shephelah transition zone) in Israel are the Ayalon, Sorek, Elah, Guvrin and Lachish Valley.
These valleys cut transversely across the foothills, serving historically as vital trade routes and ascent corridors from the Mediterranean coast up to the central mountain spine.


Large Scale map of Central Israel showing 5 main valleys with roads/trade routes
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Because the high mountain spine of Judea was surrounded by steep, rugged cliffs on the north, south, and east, these five east-west valleys were the only viable highways for an invading army (for example, the coastal dwelling Philistine people, long-time enemies of the Hebrew people).
The Coastal Plain is a flat, sandy-to-alluvial region starting on the coast of the Mediterranean Sea and historically hosting major international trade routes (e.g the Via Maris or the “Way of the Sea”).
The Longitudinal Trough is a distinct intermediate depression or trench carved through soft chalk separating the hard limestone mountain spine from the lower rolling hills.
The Shephelah is the transitional region of low rolling hills and natural east-west corridors (the 5 key valleys) connecting the Mediterranean Coastal Plain to the high Judean Mountains. The Shephelah is composed of soft Eocene limestone and low rolling hills stretching 6.2 to 9.3 miles (10 to 15 km) wide, and acts as a stepped buffer zone.
Invading armies were forced off the flat plains and funnelled into the five key, narrow valley chokepoints. Foothill fortresses allowed Israelites to spot invaders days before they could move towards Jerusalem.
Links to the five key valley articles in the BC Encyclopaedia.
Follow this link to see the BC Encyclopaedia article about the northern most Ayalon valley:
Ayalon/Aijalon, valley of
Follow this link to see the BC Encyclopaedia article about the northern most Ayalon valley:
Sorek, valley of
Follow this link to see the BC Encyclopaedia article about the northern most Ayalon valley:
Elah, valley of
Follow this link to see the BC Encyclopaedia article about the northern most Ayalon valley:
Guvrin, valley of
Follow this link to see the BC Encyclopaedia article about the northern most Ayalon valley:
Lachish, valley of