Endless Conflict - Loot dropped in an inaccessible area

The circular pillar/plateau at the center of the map, where the timeless monolith pulses to re-spawn bosses, had two pieces of loot drop. I was able to reach up there with a smoke mine but was not able to move at all (to pick up the loot) after landing on a tiny area on the edge of the pillar/plateau. Luckily, the loot that dropped there wasn't valuable, say the Timeless Jewels, but it would be unfortunate if it could potentially drop there.

The red lines indicate the perimeter wall of the pillar/plateau.
The red boxes are the loot that had dropped on top of the pillar/plateau.


Another angle.


This is my character after smoke mining up there.