I agree with the Rayman, that substrate is way to shallow.

As a side note, stick a cardboard cover on the outside of the enclosure where you intend to have her make a tunnel. If you don't, she will web up the sides to such an extent that you won't be able to see through it and therefor defeat the purpose of a tunnel you can peak into.

Agree 100% with adding more substrate.

Thanks for all the input, this post just became very useful for many noobs who might keep this T. I was so busy thinking about my little tunnel project I totally and rudely left the comfort of the T out of the equation.

I will be adding plenty more peat and removing the piece of tubing so I can build the tunnel network in a different enclosure and give the T time to get comfy.

HS

I know yours is only a sling, but this is for future reference. I used hamster tunnels/pipes, (those brightly colored ones), to build an interesting maze for my H. lividum. She can still burrow if she wants to, but she loves the tunnels! And this also makes her visible a lot of the time.