2nd UPDATE ...
More dramatic fire pictures have been sent to the blog by Val Roberts.
They show the scene in the morning and then the afternoon from Pentredwr. The Horseshoe Pass can be seen below the fire.
Thanks to Val for sharing them with our readers.
1st UPDATE ...
Donations of water and food (pictured below) have been made to the firefighters tackling the blaze by residents and local shops #helpourfirefighters.
Donations are at Wingetts and also the Leisure Centre.
* The fire scene at 10am today (Thursday). Smoke can be seen
rising from various points on the hillside.
* The fire at its height last night.
A Llangollen town councillor is helping to organise supplies for the firefighters who have spent the night battling a blaze on the mountainside near Llantysilio.
After being damped down over a week ago the fire in the undergrowth reignited yesterday afternoon.
Later in the evening seven fire engines were involved in the effort to bring the blaze under control.
Back in Llangollen Town Councillor Issy Richards was making arrangements to get supplies to the firefighters.
She said this morning: "I've spoken to Fire Chief Kevin Jones and he said that the fire dampened down overnight, but they are expecting it to kick off again as the day warms up.
"At the moment, they are about to swap the crews, so they don't need anything now, but he expects supplies will be needed later on.
"Wingetts have very kindly offered to take supplies in, we can also use the Council Chamber - where you vote, around the corner from the Town Clerk's office - if required, to store supplies. I will be there from 9am today.
"Although I am a town councillor, I am acting just as a resident who lives near the Fire Station and is very aware of the tireless efforts made by these brave firefighters.
"Town Councillors Andy Beech and Karen Edwards will be around today to help too."