Where is The Grotto? (Destiny)

by dogcow , Hiding from Bob, in the vent core., Tuesday, October 28, 2014, 15:37 (3917 days ago) @ scarab

I believe it's accessed through the area where in the Sepiks Prime strike the hive & fallen are fighting & you have to wait for your ghost to turn off the lasers blocking you from proceeding forward. If you head all the way down the hallway with the green crystals at the end you can turn left into a cave like place, it will eventually take you to the Forgotten Shores. I think.