Not recognising the topography of present-day Waterval as that shown in the "Rest Camp" photograph, I turned to
Twice Captured, by the Earl of Rosslyn, where I found the following description of the author's journey to the officers' quarters:
My road led me through two or three streets which apparently intersect one another at right angles, and along each were rows of low, but neat villas or bungalows, with an occasional church spire or imposing building to relieve the monotony. High evergreens, blue gums, and tall willows shade the inhabitants from the heat of the noonday sun; and a little river, now only a stream, seemed to form a northern boundary of the town. I passed close to where President Kruger was sitting on the stoep of his humble home, which faces his own private place of worship, and, crossing the river, soon got a glimpse of the 'birdcage', as I have since christened it, which held our British officers as prisoners of war.
The river Rosslyn refers to is the Aapjes River. Jeppe's 1899 map shows a single bridge/drift over this waterway, carrying the road north towards Waterval (12 miles away) and Hammanskraal. The area just beyond the river, described as the location of the camp, sits between two areas of high ground, that to the southeast being the hill shown on the left in the photograph. The Union Buildings now occupy the southern slopes of this ridge.
Problem solved. The compound in the photograph is indeed the former officers' camp (latterly a British rest camp), but it was not at Waterval.
Jeppe's 1899 map showing the approximate location of the officers' quarters, just beyond the Aapjes River.
Current mapping (Google Maps / AfriGIS 2024), again showing the approximate location of the "Birdcage".
Photograph of the officers' camp in Twice Captured (opposite p. 304).
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