First Images Inside Fukushima's Nuclear Reactor Show "Icicle-Like" Structures

A snake-like robot and mini drones have ventured deep inside the irradiated reactor of the Fukushima Daiichi Nuclear Power Station in Japan. As shown in their new images, the clean-up operations still have some way to go 13 years after the catastrophic nuclear meltdown.
.....
In their latest step to clean up the area, TEPCO sent robotic probes in the bowels of this reactor to examine the core and its melted nuclear fuel. Their aim is to learn about the condition of the spent fuel to facilitate its removal so the plant can be decommissioned.

It marks the first time they've managed to return with images from inside the "pedestal" of reactor Unit 1.