Mica surveys the tracks and dung heap with interest, watching quietly as Meili claims a single vibrant feather as a token.  He would claim his own trophy later. 

He turns to Ran. “No sport in hunting him all penned up like that.  It looks like the Red Wizards closed the place up tight.  That's one way to deal with him." he looks toward Eryndor “but it does mean he wouldn’t go anywhere if we tried to talk to him.  Maybe make a deal with him if we could get him free.  Do you have any magic that could take care of that rockfall?” 

Mica examines the rock slide himself to determine if it would be possible to free the animal inside.

Looking at the debris choking the passageway, it could be cleared... if you had some carts, block and tackle, and perhaps another 5-10 strong helpers, or a few mules.  As it is, it would likely require some strong magics to make this passable.

Did the party want to head inside the amphitheater anyway to get a look at or converse with its prisoner?  If so, you can either clamber over the collapsed stones in the main passage, or try to enter through the smaller halls that seem to lead under the seating area.

Ran looks at the great pile of rocks and debris that Mica is examining and shakes his head.

"I don't know about you, mate, but I don't fancy sweating to death in this heat with the amount of work it would take to move all that," Ran says.

Ran heads to one of the smaller hallways (left of the rubble pile?) and takes a look inside.

Eryndor eyes the boulders with a skeptical tilt of his head. "I’ve a touch of magic for such things," he says, flexing his fingers. "Enough to coax a few smaller stones, perhaps one great one—if the winds favor me. But shifting mountains, dear Mica, is beyond my repertoire."

Eryndor - the one person familiar with magic in their group - said his piece, nothing could dig up the monster inside. But if others wanted to look closer and  - to talk?! to the animal - she did not object and followed Ran into the smaller hallway.

Leaving the sun-dappled ruins and the open sky behind, the party slips into the shadowed archways beneath the amphitheater’s grandstands, ducking where roots poke through cracks in the fallen masonry.   The transition is stark—hot, still air turns cool and clammy, and ambient noises of the jungle ruins vanish completely, replaced by the drip of condensation.  Occasionally, the larger beast upstairs roars, but down here you feel it as much as you hear it, as the sound reverberates through the tunnels.

The space beneath the amphitheater is a crumbling labyrinth of maintenance tunnels, forgotten dressing rooms and ritual preparation chambers, all now claimed by rot, rubble, and broken bones.  The walls, once smoothly cut stone, are buckled and cracked, pushed in places by thick roots or half-collapsed under the weight of the ruins above.

A few ancient Omuan carvings and murals remain intact—ghostly figures in profile performing dramas or rituals, all eroded and flecked with mold.   Here there is the image of a jaguar... there the image of some monstrous frog, impossibly large... everywhere images of dinosaurs of all shapes and sizes.  Some passages are blocked entirely by fallen stone, while others narrow to barely shoulder-width gaps, forcing the party to squeeze through sideways, gear scraping stone.  In places, the ceiling dips low, and tangled roots drip with moisture, dangling like the feelers of a buried beast.

Then they find the first signs of the current residents.  Long scratches gouge the stone in places, each claw mark easily the length of a forearm.  In other places, bones lie scattered or piled ankle deep—monkey skulls, bird skeletons, even a few more humanoid-looking remains, picked clean and cast aside.  The scent of blood, musk, and ammonia grows stronger the deeper they go.

Eventually, they reach a series of wider chambers, a larger open space beneath the ruined seating above.  It's a den: empty now.  Scattered feathers line the floor like a twisted nest.  

Among the bones and refuse of the lair, a few glints of gold and metal catch the party’s eye—an electrum platter, a painted golden death mask, a strange oil lamp made alternating light and dark bands of metal, and a helm, somehow still intact and polished after all of these years.  The helm is lying atop a folded scrap of silk.  It looks out of place—untouched, as if deliberately placed.

And from above, faint and muffled but unmistakable, there comes another low roar - the monster above, restless in his prison.  Dust drifts down from the ceiling with each bellow, and the stones groan. 

[Ran was leading the way, so I need a perception check from Ran.  I also need a perception check from whoever is taking up the rear.  Also, unless someone has prepared a light source, or the PC has darkvision, the perception checks will be at disadvantage.]

Aside from the strange oil lamp, does Eryndor see any other lamps, sconces, or mounted torches?

[For Meili with her mask (darkvision 60ft) checks will be at disadvantage too?]

Rolling with disadvantage, take the number that fits - the lower or the normal one: 13

(If no disadvantage - the roll was 17+6=23)

If it's really dark in the tunnels, Ran would have lit a torch. He wasn't trying to be sneaky. If there's some light getting through, but just a lot of shadows, he would not have lit a torch.

Perception: 17  and a second roll in case of disadvantage: 6  

Eryndor, there are sconces on the walls that must have once held torches, but they are all empty now.  As far as lamps/lanterns, the one described on the floor is all you see.

[Reasonable to think that Ran would have lit a torch.  It is quite dark down here.]

Stealth:  15

Both Ran and Meili hear movement - Ran before them, Meili behind them.  A rustle of feather; the clacking of claws on cool stone.  They are able to call out a warning before the pack of deinonychuses are able to properly spring their ambush.

Initiative:

1. Ran  21
2. Deinonychuses  20
3. Eryndor  19
4. Meili  7
5. Mica  7

 Ran draws his swords and races forward but seeing he can't get all the way to the little dino-monsters ahead of them he pulls up at the closest thing to a chokepoint and gets ready to deal with whichever one comes first.

Movement - north to #2, blocking the narrow entrance so only one dino can come down at a time.

Action - Ready an attack with Gambit

The fight erupts with a burst of primal violence.  Ran surges forward into the narrowest stretch of the hallway, planting his feet and drawing his gleaming, magic-forged blade.  Shadows leap around him as the flickering torchlight catches the steel.  He raises his sword in preparation—ready to meet the charge.

From the darkness ahead, two  deinonychuses round the corner, their claws scraping across stone.  They give sharp, guttural honks, their eyes gleaming with cruel animal intelligence.  One darts forward with startling speed, jaws wide and talons slashing.  Ran's blade arcs out, slashing through the air in a flash of silver.

[Make attack roll for Ran’s readied strike.]

It crashes into Ran with its full weight, trying to latch on with teeth and claws. 

• Bite Attack:  20  Piercing Damage:  5
• Claw Attack:  21  Slashing Damage:  4
• Claw Attack:  24  Slashing Damage:  13

Behind it, the second raptor snaps its jaws and circles, looking for an opening.

[If, somehow, Ran does more than 25hp damage with his readied attack, the first raptor falls and the instead it was the second that attacked him.]

From the opposite flank, things go from bad to worse.

A low, trilling hiss sounds from a side passage—and three more  deinonychuses slink into view, appearing out of the gloom like demons from a child's nightmare.  They spot Meili instantly.  Small, isolated, and near the back of the party.

They move as one—a flanking maneuver as natural to them as breathing.  One takes the center path, jaws snapping.  The other two dart left and right, pressing in to surround her from three angles.  Their talons rise, claws curved like sickles.

Meili has barely enough time to prepare her defense before all three of them lunge.

• Bite Attack:  6  
• Claw Attack:  24  Slashing Damage:  12
• Claw Attack:  14  

• Bite Attack:  20  Piercing Damage:  6
• Claw Attack:  9
• Claw Attack:  16  Slashing Damage:  10

(w/advantage from flanking)

• Bite Attack:  23  Piercing Damage:  7
• Claw Attack:  15 
• Claw Attack:  17  Slashing Damage:  7

The creatures descend on her in a blur of feathers, claws, and shrieks.  One leaps and latches on with its foot talons, trying unsuccessfully to pin her to the ground, while the others snap at her limbs and try to pull her down in a coordinated frenzy.  Blood flies, splashing the tunnel walls.

The party now finds itself split—Ran, holding a desperate defense at the choke point, while Meili is swarmed from the opposite side, and the rest of the group must react fast to prevent her being torn apart.

Somewhere above, muffled but not distant, the King of Feathers roars again.

Eryndor:

1. Ran  
2. Deinonychuses  
3. Eryndor  
4. Meili  
5. Mica  

[Eyndor, Meili and Mica are all up, then Ran again, before they dinosaurs continue their assault.]

Mica whirls as he hears the skittering of claws and the shrieks of the approaching dinosaurs, he shouts "Watch out!" a beat too late.  He is just in time to see a group of the raptors surround Meili and attack with snapping jaws and razor sharp talons.  Mica takes a step, moving diagonally toward the wall and directly in front of one of the dinosaurs and attacks with his hand axes, trying to strike between the feathers and gnashing teeth. 

Attack: 9 Damage: 7.

Attack: 7 Damage: 7.

Attack: 25 Damage: 7.

plus 5 colossus slayer damage on a second hit. 

.

Ran's Readied Attack: Attack: 10 Damage: 14 

Ran senses his attack is going off and concentrates harder, looking for an opening in the blur of claws and teeth (using a Superiority Die - Precision Attack - adding 5  to the attack roll) 

(Total of 15 to hit for 14 damage)

Eryndor takes a breath, steadying his pulse as steel and screams crash around him. Then—gripping his lute tightly—he steps forward into the fray, circling to flank one of the slavering deinonychuses with an agile, dancer’s stride.

"Hold fast, Meili!" he calls, and with a flourish of his hand and a bright, rising note on his lute, he sends a ripple of healing magic through the din—Healing Word (at third level for 22 points of healing on Meili), soft and urgent, laced with lifeblood and resolve.

As the magic finds her, he lifts his gaze toward the broken ceiling, toward the echo of that roar still lingering in his bones. His eyes flash with sudden insight as he calls upon his Universal Speech, ancient syllables of the Fey lacing through his voice like golden threads.

The air seems to tremble, just slightly, as his words become strangely resonant—understood not just in meaning, but in intent. The King of Feathers… and the three raptors… hear him now. Truly hear.

"Mighty one," Eryndor calls, his voice ringing out, equal parts reverence and urgency, "Lord of Talon and Thunder! We kneel not as enemies, but as allies! The red-robed Thayans twist the breath of life, raise dead things to mock your dominion! We are trying to infiltrate and destroy them."

He gestures sharply toward the distant enemy lines, his voice rising in crescendo.

"Turn thy wrath toward those who defile these lands—we would stand with you, not against you! Let us be the claw beside your fury!"

The last note hangs, quivering in the air like the held breath before a storm.

Meili noticed the movement but was not fast enough to react before the whirlwind of claws and teeth overwhelmed her. The beasts were too fast to even defend herself and for a moment it felt like this was her final battle, when the wave of pure healing magic returned her to life.

She was still groggy and bruised but could fight back!

Meili attacked the one already weakened by Mica.

Attack: 22 Damage: 11
Attack: 26 Damage: 15

BA Flurry of Blows:

Attack: 23 Damage: 7
Attack: 11 Damage: 10

If that dinosaur is dead, the next one, in front of her (bottom of the map)
Stunning Strike on the success of every hit dinosaur not dead.

Ran hears combat behind him.

”More of your scaly friends?” Ran asks the dinosaur in front of him.

He keeps an eye on those talons. Having your stomach nearly sliced wide open makes aware of the danger. But Ran was rarely a defensive fighter and he swings both blades up and gets them moving quickly, slashing out again and again. And then again.

Action - Gambit - Attack: 22 Damage: 10  

Second Attack with Gambit - Attack: 10 Damage: 9  

Bonus Action - Longsword - Attack: 23 Damage: 7  

Pending results, may still Action Surge