so at twilight you may walk safely over the swallowing earth

Work's been intense, but I took a break and met wakanomori for lunch, and we read a little from this book, The Old Ways, by Robert MacFarlane, and there was this passage:

The way-marking of old paths is an esoteric lore of its own, involving cairns, grey wethers, sarsens, hoarstones, longstones, milestones, cromlechs and other guide-signs. On boggy ares of Dartmoor, fragments of white china clay were placed to show safe paths at twilight, like Hansel and Gretel's pebble trail. (p. 15, italics mine)

May you find your glimmering twilight path.