The Snowmelt River (The Three Powers)

Frank P. Ryan, author of Goodbye Baby Blue and Tiger Tiger, is a multiple-bestselling author in the UK and the US. His books have been translated into over ten different languages. The Snowmelt River has been called “Enthralling. Not many books have this cosmic ability,” by TheLos Angeles Times.
 
On the summit of the fabled mountain Slievenamon in Ireland there is a doorway to an ancient land of terrible power. The gate of Feimhin has lain closed for centuries, the secret of its opening long lost. But now four orphans drawn together by Fate must pass through the portal to face their destinies. What they find beyond is the enchanted but war-ravaged world of Tír, a strange land peopled by beings of magic. Here death waits at every corner and they must learn to fight if they are to survive. And they’d better learn quickly, because their enemy, the Tyrant of the Wastelands, is growing in power.