Before reading this snippet, I've copied the descriptions of Snars and Sables from earlier chapters so you know what they are, also a little more about Snars is that they're kind of like a black bear crossed with a hog.

Snars

"....it’s black fur heaving up and down, it’s mouth gnarled over it’s gums, protruding sharp, yellow teeth, it’s white eyes glowing, it’s long ears pressed back as though ready to attack, it’s four strong legs hunched as it listened to it’s prey, it’s solid rock feet with three crooked claws gripping the ground."

Sables

"...the yellow grass began to crunch and wither beneath the giant claws that trampled it, tall black legs grew up from the feet, like that of a horse, but far more stronger, atop these legs rested a body of black with thick lines of rusty red fine fur, the neck stretched out with a black spiked mane leading up to a head that bowed down low with the line of red fur climbing up the side of it’s neck and pouring down to a stop at the nose, it’s eyes were bright yellow slits and in it’s mouth were four sharp teeth like daggers."

Snippet of Chapter 16; The Battle of Herawyth

The giants had not yet reached the city, but they raced across the fields on giant Snars led by Alqual, his companions however did not ride with him this time, Rhoda and Aranrhod remained at the fort.

  However riding on a line of Sables behind the rank of Snars was another rank of giants, led by Thorin.

   Amidst the giants were red bears, enormous creatures, much bigger than any horse, Snar or Sable with snarling jowls, that were dragging huge catapults. There were particularly taller giants loading the catapults with boulders and hurling them into the city.

  The boulders hit the towers with tremendous force, crashing holes into the sandy stone buildings and knocking archers from the tower tops down to their deaths.

  Iowerth looked up at the city in shock. The archers lined along the outer wall looked out towards the mass of giants heading for them. One of the archers shouted down to Iowerth,

  “They’ve got red bears!”

A lot of the army that heard him felt their stomachs clench, they tightened their grip on their weapons.

  Another boulder came hurtling through the air, hitting a tower.

Iowerth held up his sword to the archers atop the outer wall,

  “Fire!” he screamed.

The archers began firing into the giants. A general of the archers ran along the wall, he looked across to the towers, signalling for them to fire. A torrent of arrows flew through the air towards the giants, who merely pulled them out and kept riding.

  A young boy ran along the edge of the wall, pouring oil into a very thin trough, he reached the end where a torch hung in a bracket, he tore it out, throwing it into the trough, a speeding flame lit the oil along the wall. The archers dipped their arrows in and aimed high, firing further into the giants.

  The flames pierced flesh and threw giants from their Snars, other took down Snars, searing their fur apart.

  More boulders hit the towers, causing debris to cascade into the city.

The archer general looked out at the bears, then turned to the archers atop the towers,

  “The bears! Aim for the bears!” he screamed. The archers began sending flaming arrows into the red bears.

  On the ground Iowerth walked along the line,

“Aim for their throats and vital organs! Their flesh is stronger than ours, if you can bring them down with one blow do so, before they bring you down!” he reached his spot out front again.

  “Bring down the Snars or they will feast on you!” the men took a strong stance, holding their weapons ready.  

   Iowerth turned and shouted into the army,

“Coromoran!” there was no answer. An archer shouted back,

  “He’s not here!”

A blind fury lit inside Iowerth, he swallowed hard,

  “When they hit, fire!”

He turned around and looked up and down the line at his long swordsmen,

  “Men, forward!”

The front line walked forward a few paces and took up a strong stance.

  Iowerth lowered his voice so only they could hear,

“Herawyth has never been breached. Let’s show these animals why”

  Alqual raced forward, he lifted his sword,

“Charge!” he bellowed.

   A line of Snar riders thundered toward the line.

Iowerth braced himself as a Snar rider headed straight for him.

  He stared at the Snar, knowing he had to overcome it before taking on the giant.  He remembered what Aidan told him about the Snar attack. He looked up just as the Snar pounded forward, Iowerth crouched low then jumped with all his might, crashing his foot down onto the Snar’s head, then flying through the air, he spun, heaving his sword and taking the giant’s head clean off. The body fell from the Snar, overhead a torrent of arrows flew into the oncoming giants, as Iowerth landed on the Snar’s back, he swung the creature around to face the giants.

   Several of his men had pulled the giants down and climbed atop the Snars, whilst others were being torn apart, their blood spraying through the air.

In Chapter 4, as the troupe pass through the hills, they stumble across something that has a daunting effect on them all, but still manages to leave our heroine with a sense of hope.

   "Everyone had come to a standstill.

Aidan stood still staring up at a tree that stood before them, its roots spread into two hills and it reached up cracking and snapping, there were splits in the bark and the branches were dead, drooping down as though they once held fresh leaves, but now it hung dead, the path had even stopped to honour the dead tree and carried on a few yards away.

    Mimla took the decision to continue and not wanting to disturb the roots he rounded onto the bank of the right hand hill before finding the path again. Manny reassuringly tapped Aidan’s shoulder ushering him forward, Brom and Hurn followed as Armel and Tain carefully manoeuvred the horse around the roots taking care not to break or to disturb the tree.

   They continued on their path all oddly touched by the tree, which stood in resting death within the hills.   

     Brom wanted to take the tree away and put it to rest, Hurn wanted to take it to the hilltops so it could be seen by people all around. Mimla wished he knew a way to make it grow back to life. Aidan and Armel felt the way they always did when they passed the tree, a heavy cloud would climb on them and force them to stop out of respect. Tain wanted to heal it and bathe it in the river, giving the tree a chance to breathe and be cleansed. 

    All wanted to help or immortalise the tree, save Manny who when they stopped before it had but one thought ‘No one should pass this way’ he wanted them to leave the tree alone where no one could stumble on it, so that the tree could rest in peace.

   As the path rounded the corner Manny took one more glance back at the tree before it disappeared out of sight and for a while a melancholic mood fell over them even the horse seemed to slow and for a moment Tain rested her head on the horse’s neck as a mutual understanding of their sadness.

   They had been walking for about three hours when they reached a trickle of a stream that crossed over the path; they all took their rest against the two hills either side. Tain set the horse down to drink then sat beside him taking off her boots and bathing her feet.

      Manny sat on the other side of the stream mirroring Tain’s idea of bathing.

  They rested a while and ate and drank finding their conversation again.

 Manny lay back resting his arm over his eyes and Tain rested her chin on her knees.

   “How you finding it?”

She turned to see Aidan stood above her, he sat down at her side.

  “I suppose it’s slightly different to tending the river isn’t it?”

She smirked half-heartedly still not being able to get the image of the tree from her mind, Aidan spoke almost in answer to her thought.

  “It’s hard to forget isn’t it?”

She looked at him as he continued “I always forget about it which is ironic given you can’t get it out of your head afterwards”

  She thought for a moment then asked the inevitable,

   “What happened to it?”

Aidan sighed, 

   “After Bonham and his army burnt the forest they spread out across Hadiran, as you know and in their cloud of destruction Bonham would send scouts back to the Mountains of Adonow, regularly and the last scout he sent was a softer-tempered giant named Donoh, he found a tree that was blossoming and he decided to rest there.

 He heard a noise within the tree and without thought he took his axe and started swinging at the tree…” he hesitated before continuing.

  “He hacked away at the branches and then he felt droplets of blood on his face…a child fell into Donoh’s arms, he’d come down from one of the hilltops to play. Donoh hacked him down and when he finished the tree began to crack, Donoh buried the child within the roots and from then on the tree ceased to grow”.

  A gentle breeze blew around Tain and although she could sense the sadness in Aidan, she needed to know one more thing.

   “This giant, Donoh. What happened to him?”

 “He returned to Adonow, he’d killed many children under Bonham’s orders, but never as brutal. I think Donoh realised that it just wasn’t worth it anymore”

This story comes during Chapter 4: Leaving Penavort. One of the characters, Mimla Corancfoot tells everyone the story of how the hills came to be named after his family whilst they pass through those very hills.

"The story of the Corancfoot Family

“A thousand years ago when the giants came from Adonow, my family lived in the forest around Llagormenan Lake, hunting, fishing and tending to the land.

   One of the men went into the range at the foot of the Adonow mountains to hunt and he was struck down by a mighty arrow; his body was found broken on the edge of the Northern Woods; no arrow could break a man that way. They brought him back and buried him beside the lake.

  His three brothers went out to find what creature could have done it and there in the mountains they found a camp of giants who had left Adonow with greed in their eyes, they were lead by a giant among them named Bonham Lokin, he spoke of terror and his desire to conquer. He had grown weary of the mountains and had gathered a group of giants like minded to take into the world.

   They knew a fight would be hopeless and so with haste they hurried back to the lake and there they gathered the families and what little necessities they could carry.

   Without any rest they headed through the forest as fast as they could, with age and youth reigning them backwards their journey slowed and men stayed to boarder the forest whilst the rest hastened through. The three brothers remained at the foot of the Green Hills to see the rest of the family safely through.

   The men that remained saw the giants approaching with fire and ran through to warn the brothers, but they fell into the forest as it burnt away.

   Only the brothers remained whilst the women and elder folk led the children over the hills, they gathered their strength and conquered the hills in two days without rest and even then they never stopped.

   They drove onwards following the river until they reached the stretching farmlands of the river town, the people of the river gave them land and new life and in return when the years of destruction and malice had spread throughout Hadiran and reached battle at the Merythrid Fields the Corancfoot family were ready to ride the Great Wave with all the people of the river.

   As for the three brothers, they separated, each fleeing into the hills, all managed to take out giants with arrows, without being seen or heard, until Bonham Lokin reached the nearest hill of the three brothers and seeing movement there he brought them down one by one until all were broken. Broken like their brother, but never forgotten.