Walla Brook (Lyd)
From Wikishire
The Walla Brook (one of a number of Dartmoor streams of the same name) rises on Dartmoor, in Devon, in the north-west part of the moor, at a spring known as Head/zoom=11 Wallbrook Head below Hare Tor, and picking up the water of a number of other springs on these slopes on its brief course.
The stream flows due west for about a mile and a half before discharging into the River Lyd on High Down, west of Lydford.
