Hi dasboot and Mike 41
I think that the link is to the wrong badge, the link is to the München badge and not to the Hochland badge - they are almost alike, but with another text. The year is 1928-1938 on the Hochland badge, and 1923-1933 on the München badge.
You can find a pic of the Hochland badge in Angolias
book "The HJ", vol. 2 page 210
"Ten Year district commemorative Hochland 1928-1938"
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That is all what I can tell you about your badge - but I am sure that there are other collectors, that know more about it.
Michael