Here's a UK rainfall map, which puts things into context:
> Link <
I live just North of Cambridge, in an area noted for sand and gravel quarries (sand and gravel starts about 1ft from the surface and continues to a depth of over 30ft in places.
The topsoil is shallow, low-fertility and water drains very quickly through the gravel. Throw in the low-rainfall as indicated by the map and you can see that it is an extremely hostile environment.
> Link <
I live just North of Cambridge, in an area noted for sand and gravel quarries (sand and gravel starts about 1ft from the surface and continues to a depth of over 30ft in places.
The topsoil is shallow, low-fertility and water drains very quickly through the gravel. Throw in the low-rainfall as indicated by the map and you can see that it is an extremely hostile environment.

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