Thanks for your question.
Although kutsavi-ga is correct in that Huxley wrote a great deal about
Kenya, the country Elspeth Huxley was referring to in the quote you
gave in your question is Australia.
The quotation comes from a book Huxley wrote about Australia,
" . . . and in Sydney was the sun . . . From it [the sun] springs the
whole Australian temperament . . . This country is a rim containing
people round a withered hub and fringed by over 12,000 miles of coast
lapped or pounded by oceans."
"Their Shining Eldorado: A Journey through Australia," by Elspeth
Huxley. New York: William Morrow & Company, Inc., 1967, p. 17.
A search through the Library of Congress catalog for Huxley, elspeth
AND Australia turned up the book, which I then found on the shelves of
a local library.
Library of Congress Catalog
I hope this answers your question. If you need additional information,
please ask for clarification before rating my answer and I will do my
best to assist you.