The Grottos
From Destinypedia, the Destiny wiki
The Grottos is an area north of the Forgotten Shore in Old Russia. It is inhabited by many level 20 Hive and two level 20 Fallen Dregs. It has a small cave with a dead end and a group of Thrall on the side of a mountain and a much larger cave that leads to the Refinery and is crawling with Hive of all kinds.
