Idea of Climbing Anchor Icon
It's a logo of a climbing anchor which looks sort of like a curved triangle with its point to the upper right. On the left is a double line representing that the item has depth and then on the item is a circle on the right side and an oblong curved shape to the left inside it.
This page shows the different variations of the Climbing Anchor from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.