<a href="https://en.wikipedia.org/wiki/W.H.B._Hoare" class="extiw" title="w:W.H.B. Hoare">W.H.B. Hoare</a> and <a href="https://en.wikipedia.org/wiki/C.H.D._Clarke" class="extiw" title="w:C.H.D. Clarke">C.H.D. Clarke</a>, in September 1937, at the conclusion of their scientific expedition to the region of the <a href="https://en.wikipedia.org/wiki/Thelon_River" class="extiw" title="w:Thelon River">Thelon River</a>.
Unknown author<span style="display: none;">Unknown author</span>
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