Three word story for more people with more than one word to say...

[sourland]

while searching for

 

[NickyKnack]

truffles that grew

 

[sourland]

wherever oak roots

 

[NickyKnack]

came to the

 

[sourland]

silty, organic surface

 

[NickyKnack]

because of the

 

[sourland]

impenetrable shale underpanning

 

[NickyKnack]

restricting their growth

 

[sourland]

and causing decay

 

[NickyKnack]

of the taproot