  Suppose that $f_1,\ldots ,f_m : S(V)\to R$ are $m$ ($\geq 1$) continuous
functions defined on the unit sphere in a Euclidean vector space $V$ of
dimension $m+1$ satisfying $f_i(-v)=-f_i(v)$ for all $v\in S(V)$. The classical
Borsuk-Ulam theorem asserts that the image of the map $(f_1,\ldots ,f_m)
:S(V)\to R^m$ contains $0=(0,\ldots ,0)$. Pursuing ideas in papers of
B\'ar\'any, Hubard and J\'eronimo (2008) and Frick and Wellner (2023), we show
that a certain separation property will guarantee that the image contains an
$m$-cube.
