Readers of this blog will perhaps remember that last October Lynne and I came across these structures on Glas Maol. See here.

Well, Rene van der Wal of the University of Aberdeen has commented on the post saying:
“These are grazing cages which I have erected with colleagues to determine the influence of primarily sheep grazing on the summit vegetation on Glas Maol. We are particularly interested in the fate of woolly fringe moss, or Racomitrium lanuginosum, which is perhaps best known as key habitat for dotterel to exist.” Very interesting and thanks to Rene for taking the trouble to provide this explanation.
Well, Rene van der Wal of the University of Aberdeen has commented on the post saying:
“These are grazing cages which I have erected with colleagues to determine the influence of primarily sheep grazing on the summit vegetation on Glas Maol. We are particularly interested in the fate of woolly fringe moss, or Racomitrium lanuginosum, which is perhaps best known as key habitat for dotterel to exist.” Very interesting and thanks to Rene for taking the trouble to provide this explanation.