[...]
[After a long journey underground, the vibration subsides... The membranous sides of the 'carrier earthworm's' abdomen open...]
[The grayish light sprinkling down from above is extremely dim. Looking up, you notice the glow-inducing fungi clinging to the top of the stone wall are sparse, a sign that you are deep underground.]
[The deeper you go underground, the fewer such illuminating fungi exist. Beyond a certain depth, these fungi die out altogether, plunging the area into eternal darkness.]
[Thanks to the faint light, you can barely make out the distant 'abandoned ancient nest'...]
[It's a massive spherical gray-white structure, its surface covered in burn marks, hefty tubes extending from the sphere to the ground, making the structure exceptionally stable.]
[You leave the earthworm cavity and move closer to the 'abandoned ancient nest'...]
[You arrive at the expansive spherical structure.]