The Spider Coves is a sub-area of Hollow Grove. It is a cave filled with roots, spiders, spiderwebs, and an underground pond.
When Ori first enters the Spider Coves, they see a hanging boulder covered in web and spider eggs. To progress, Ori uses Charge Flame to detach the boulder from the web, causing it to fall to the ground. This allows Ori to safely avoid the thorns at the bottom of the pit.