Mudflow beneath Craig Pwllfa Looking up the course of a mudflow towards its source in unconsolidated material beneath the rock band at the head of Cwm Pwllfa. The flow is visible for miles as a great streak extending perhaps 100m down the slope.
<a rel="nofollow" class="external text" href="https://www.geograph.org.uk/profile/8255">Alan Bowring</a>
CC BY-SA 2.0
From <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/photo/1405853">geograph.org.uk</a>