I am planning on a series of "Troll Under a Bridge" caches in the West Lothian area. The series will be added to as and when I have found suitable bridges for the little trolls to make their home.
The first is located under the Almond Valley Viaduct. Built between 1839 and 1841, this impressive structure has 36 arches, in two parts - separated by an embankment. The cache is placed under one of the arches of the larger section.
You may want to take a note of the troll's name