Where is the setting of the story Through the Tunnel?

The story is set in an unspecified foreign country, possibly South Africa.  Jerry and his mother are both English and travel to this country to vacation.  Since Jerry is not in his homeland, it is a perfect setting to help reinforce the theme of fitting in.  He sees the native boys and instantly longs to be one of them, despite not looking like them nor being able to pass "through the tunnel" as they do.  It is this drive to fit in that fuels him and sets up the story's conflict.

Another important setting of the story is that of the beach and the rocks protruding from the ocean.  These are important because the beach represents safety and the rocks represent danger.  Once Jerry has set his mind to going "through the tunnel" as the native boys do, he abandons the safety of the beach and begins to face the dangers and adversity of the rock.  In this way he is not only striving to fit in, but Jerry is also leaving the safety of childhood behind and entering the uncertain world of adulthood.