The pulse came back.
Blue light travelled beneath the pale growth toward me, not through the route I had touched, but through a darker branch several body lengths to the left.
One cap folded.
Then another.
The movement curved around the edge of the field and stopped close enough for the nearest strands to brighten beneath my tentacles.
I did not move.
Nothing rose from the ground.
Nothing opened a mouth.
That was already better than most responses I had received since waking up.
Several caps closed around the final point. A faint cloud lifted from them and drifted sideways through the cold air.
Spores.
I pulled both lower tentacles inward and flattened myself against the damp stone.
The cloud passed above me.
Most of it.
A few pale particles settled on my shell and disappeared against the moisture.
I waited for burning.
Numbness.
Sudden death.
Nothing happened.
The blue light faded.
The field became still again.
'It answered.'
The thought arrived too quickly.
I stared across the pale caps toward the darker mound.
A response had left my touch, travelled away, disappeared beneath that growth, and returned through another route. That was more complicated than the reaction caused by falling water.
Complicated did not mean intelligent.
Nerves were complicated. Pressure systems were complicated. Fungus did not need a personality to pass a signal.
I knew that.
I also wanted it to be wrong.
The cavern was large enough to hide an ecosystem and silent enough to make the feeder's scraping feel almost familiar.
If something here had answered me, then I was not alone.
If something here had understood me, then I had introduced myself by poking it.
'Excellent first contact.'
A faint scrape travelled through the slope behind me.
Farther away than before.
Probably.
I looked back toward the hidden channel, then at the field.
The feeder had given me a time limit. It had simply refused to display it.
One result was not communication.
It was barely a result.
I needed controls.
The nearest soft gray fungus grew along the wet groove behind me. I crawled back several body lengths and scraped off a piece smaller than my head.
The tissue came apart easily.
Food.
Probably.
I carried it toward the field.
The fragment dragged across the stone and caught on every rough patch. My shell pulled sideways whenever it stopped.
Christopher Aspen had once complained about forceps with poor grip.
He had been ungrateful.
I pushed the fragment onto the nearest pale strand with my mouth.
The surface compressed slightly.
Nothing travelled.
I waited.
Still nothing.
Dead material produced no response.
Possibly.
It might have been too light. It might have been the wrong material. It might not contain whatever the field recognized.
I crawled partly over it and pressed down with the front edge of my foot.
A cap folded nearby.
Blue light moved through one short branch and stopped.
Better.
Pressure mattered.
Or living contact mattered.
Or both.
I removed the fragment and retreated to bare stone while the cap reopened.
One snail.
No clock.
No notebook.
An ethics committee would have been useful too, but mostly for the field.
Another scrape passed through the slope.
Closer this time.
I ignored it with the professionalism expected from someone whose laboratory was about to be eaten.
A clear droplet had begun forming beneath a thin cap above the boundary. The cap bent lower as the water gathered.
I moved aside.
The droplet fell.
Tap
It struck the pale mat.
The nearest caps closed first. Blue light spread outward in a wide circle, weakening as it moved. No narrow route led toward the mound. Nothing returned.
Water caused a broad local reaction.
My touch had caused a travelling one.
Different.
Useful.
Not enough.
The first return might have depended on living contact. It might have depended on location. It might have been unrelated movement that I had mistaken for an answer because the alternative was silence.
Loneliness was not evidence.
I waited until the caps reopened, then extended one lower tentacle and tapped a pale strand.
Contact.
Release.
Blue light travelled through two thin branches and faded.
I pulled back before the nearest cap closed.
Short contact. Short response.
Maybe.
I touched the same strand again and held it.
The surface compressed beneath the tentacle.
Blue light brightened.
One branch travelled toward the mound. Another spread sideways.
A cap folded beside my face.
I kept holding.
The second cap closed.
Then the third.
'Enough.'
I pulled away.
The light continued briefly before fading.
Longer contact produced more activity.
That was the cleanest result I had.
It was also the point where a sensible researcher would stop.
Unfortunately, I intended to cross the field.
Every movement I made left mucus behind. If the network reacted strongly to it, then the first metre could become a trail of closing caps and spores.
That was not a detail I could discover halfway across.
The next scrape came with a soft tearing vibration.
I turned toward the slope.
The feeder was still behind the obstruction.
Probably.
The living seam above the channel brightened once, then dimmed.
Less time.
I dragged the dead gray fragment through the mucus trail behind me. A clear thread clung to it.
I pushed the wet fragment onto another pale strand without pressing down.
The tissue brightened beneath the mucus.
A thin pulse moved several centimetres and stopped.
I froze.
The dead fungus alone had done nothing.
Mucus had changed the result.
Moisture.
Chemistry.
Living cells.
Any of them could explain it.
'Still not communication.'
The thought sounded defensive.
The fragment had stuck between two caps. One remained open. The other began folding around it.
That answered the practical question badly.
Old mucus carried on dead material caused a response.
Fresh mucus under my body could produce more.
I needed to know how much more.
Not because I was curious.
Curiosity was merely present and extremely supportive.
I chose a patch beside a rough stone ridge. If my balance failed, the ridge could stop my shell from rolling. Bare stone remained behind me. The nearest pale cap was far enough from my eyestalks that "far" had become another word requiring revision.
I placed only the front edge of my foot against the mat.
Fresh mucus spread beneath me.
The threads brightened immediately.
Faster than before.
One pulse travelled toward the mound.
Another ran behind me along the boundary.
The caps around my foot began closing.
I pulled back.
The pale strands tightened against the mucus.
Not trapped.
Just slower.
That distinction remained comforting for almost half a second.
I contracted harder.
The nearest cap snapped against my right lower tentacle.
A soft impact.
Then cold numbness.
I jerked backward.
Three more caps folded.
Pale dust burst around my head.
I pulled both eyestalks in and flattened myself against the stone, but the cloud had already reached me.
Particles coated the wet tissue around my mouth.
Bitterness spread across my radula.
My body contracted.
The field shifted beneath me.
No.
The field remained still.
I was tilting.
I dragged myself backward until my shell struck the prepared ridge.
The impact stopped the roll.
Planning.
A new experience.
My right lower tentacle hung partly extended.
I tried retracting it.
The movement came late.
Numb.
The bitterness reminded me of the brighter blue growth I had tested earlier. So did the slow nausea tightening beneath my shell.
Similar effect.
Not proof of the same cause.
I checked my Health.
[Health Points: 1/1]
Still one.
Technically excellent.
My balance disagreed.
I remained against the ridge while the dust settled. Mucus had thinned beneath my body. Pulling free had cost more moisture than the distance justified.
The test had produced enough information.
Dead material alone caused little or nothing.
Pressure or living contact produced a short response.
Water spread the reaction locally.
Longer contact increased activity.
Mucus produced a response even when carried on dead tissue.
Fresh mucus caused the fastest and strongest one.
Contact, spores, or both had caused numbness and nausea.
I would have preferred one conclusion that did not make crossing worse.
The System had not asked.
I touched the ridge twice with the numb tentacle.
The first contact arrived as dull pressure.
The second felt sharper.
Recovery, probably.
I did not know whether the spores were breaking down, being expelled, or spreading farther through my body.
Another dose remained unnecessary.
Across the field, the darker mound stayed still.
No pulse returned.
Maybe the first had been coincidence.
Maybe the correct route had closed.
Maybe something had noticed once and lost interest.
That possibility should have been reassuring.
It was not.
I had spent long enough alone that silence had become a threat and company had become another one.
I turned toward the marker.
[Location: Fungal Cavern]
[Distance: 6.4 meters]
No progress.
I had used moisture, risked poison, and irritated an unknown biological network to travel approximately nowhere.
Research.
A scrape passed through the stone behind me.
Loud.
I stopped.
The hidden channel answered with another tearing vibration.
Then something heavy touched the living fungus above it.
Blue light surged into the cavern.
The pulse was wider than mine.
Wider than the falling water.
It entered the field through several branches at once.
One pale cap closed.
Then ten.
Then the entire edge began folding toward me.
Something heavy had reached the field.