Any particular unit? My degree is in history, specifically military history. I have a decent collection of reference books. I might have something, although my familiarity with the Boer War is only a passing one, except for the changes in tactical doctrine that ensued following.
It's a picture of the 1st Argylls in front of a "Rice" blockhouse, ca. 1901. The photo is in Knight and Embelton's "Boer Wars (2): 1898-1902", an Osprey Book -- see my post earlier in the thread.

My BA and MA are in military history, and I work as a park ranger at an NPS Civil War Battlefield.

Regards,

Todd