A quiet trail in the forest south of Brussels leads to a massive stone dolmen surrounded by a circle of 11 standing stones.
The monument looks as if it might date from the same period as Stonehenge, but it was actually put up in 1920 in memory of Belgian forestry workers who died fighting in the First World War.
The massive stones for this unusual war memorial were brought from a Neolithic quarry in the hills above Wéris village in the Ardennes.
Derek Blyth’s hidden secret of the day: Derek Blyth is the author of the bestselling “The 500 Hidden Secrets of Belgium”. He picks out one of his favourite hidden secrets for The Brussels Times every day.