Reply To: Ordovician/Silurian Canal Rocks Homepage › Forums › What Is It? › Ordovician/Silurian Canal Rocks › Reply To: Ordovician/Silurian Canal Rocks January 26, 2018 at 4:46 pm #30458 Inkar ArzahParticipant Here’s the photo Attachments:You must be logged in to view attached files.