Crystal Tree In The Dome 

"What is it down there?" I said as I stopped at the huge hole, where the temple had been and looked down.

My soul sense is being repelled by it, that I couldn't see more than a blur.

Barely anyone was staying above, everyone seemed to be down there and anyone who was appearing was getting down in the hole.

I thought for a moment, before jumping down. 

The place was over five miles deep, but didn't take me more than a few seconds, to reach the dome covering it.

It is deep, but it shouldn't have been hidden. Soul senses of Sky Sovereigns could have easily been able to go this deep. I immediately asked my clone to look at the info and it didn't even second for it to provide me an answer.

It was an expected one.