The Landbreakers' "treasure trove" you find happens to be the missing UWST gel-cotton.

Can these be the ... explosives?!

Ah! I just remembered! These must be the gel-cotton explosives that Satyr mentioned! The Landbreakers actually hid them here...

Endmin, we should call Satyr right away. His crew should carry these explosives back to their sites. I really don't want anything bad to happen...