"Might as well.  I don't sense any undead but do try to avoid getting sucked to another realm.  That would be unfortunate."    

You find a weathered coffin underneath the dirt. It's not a typical sized coffin either. 

Off near the back of the house, you can hear a pig squealing. It's loud, and obvious. Eralynn jerks.

Raastin shudders at both the sight of the coffin and the squealing pig. "This place gives me the creeps," he mutters, looking to the others. He readies his blade, keeping his other hand free. "We should be done with this quickly." The half-elf nervously scans their surroundings, waiting for something to jump out and maul them at any moment.

Perception: 18

Ecko seems visibly rattled by the ominous surroundings. He nervously approaches, shield drawn, content to be the one to deal with anything unsavory that pops out from the ground. He begins muttering strings of arcane energy. What appears to be a sonar extends from the center of Ecko's shield.

Ritual cast Detect Magic.

"Out of the circus and into the graveyard," he nervously chuckles, curious eyes now alight with a twinge of caution. "This place is still cool! I want to explore it...after Ysabell does what she does. I'm sure there are undead here, I mean - look at this place."

Garmus stands back a little, leaning on the shovel after uncovering the coffin.  Hearing the pig he looks to were the sound came from. "What the hell is a squealer doin' here?"  He mumbles to know one in particular.  "Do we need ta open it?" He asks, looking back at Ysabell.

(Assuming she senses the presence from within she'll nod yes)

"Best stand back!"  Garmus says as he shoves the edge of the shovel in between the lid and and box, using it as a lever to pop the top off.

In the coffin is the skeleton of a horribly deformed young adult. It's so deformed it startles you, like the child had some form of horrible elephantitis. The ravens caw loudly. Beyond the coffin, below it, is the faintest purplish glow. On the coffin reads, SYLPHENE, Beloved Daughter, May She Find Peace at Last. If it's cold outside, it's even more colder here. Eralynn buries her face in Raastin's chest, shivering.

"Gods, I've never seen the like." Garmus says, his voice uncharacteristicly quiet as he looks over skeleton in the coffin. 

Ecko shivers uncomfortably from the wind and the rather unsettling skeleton found in the grave. Still, his curiosity gets the better of him. That purple glow was enticing. Ecko begins crawling in, searching for what is causing the thing to glow. "Well! This isn't quite what I expected. I prefer Hupperdook...or Baldur's Gate, really. I wonder if there's a bakery nearby." 

If there's nothing else, Ecko - while energetic, there's a damper on his mood - struts around, looking for anything interesting within the graveyard. Investigation: 22

The other gravestones say this:

BARON BRANTIFAX
Husband, Father, Hunter
“Let No Man Stand Above Another”

BRORN
Hound of Brantifax
Faithful to the End

HELUTHE
Our Pride and Joy
Lost Too Soon

Raastin asks, "What's that purple glow? It doesn't, um, seem natural." The half-elf rogue extends his hand toward the glow, emitting forth from his hand a ghostly mage hand stretches down to the where the glow is, plucking at the ground around it to see if it reveals anything. 

It's like a mist, it's there, but it's not. The ravens, based on their cawing, seem to like what you guys are doing, despite how nervous Eralynn is. From inside the house, you can hear the sounds of more pigs. What the heck?

"This is out of my ken here. You magic types are gonna have ta figure this out."  Garmus states, leaning back on the shovel again.  "Do you all hear more pigs or is that just me?"  He asks.

Eralynn jerks, afraid, towards the house.

Why are there pigs outside and inside the house? What is going on?

Your raven friend flies up to the roof, walks along a slanted portion of it, and vanishes from view.

Quote from CrispyDM >>

It's like a mist, it's there, but it's not. The ravens, based on their cawing, seem to like what you guys are doing, despite how nervous Eralynn is. From inside the house, you can hear the sounds of more pigs. What the heck?

"Curious..." Ysabell commented to herself, completely unbothered by the eerie atmosphere, as she attempted to discern what the mist was.

• Arcana check - 2

The mist appears to be the site of a portal. Leading where, you have no idea. Currently, it's not open.

Ecko switches tactics. He flips a page in his spellbook and begins to Identify the purple glow for what it is.

He casts a look at the raven. "Oh. How sad...' he calls, appearing the most upset he had been, even considering the dreary surroundings. "Should we follow it? Pigs seem out of place here."

The purple glow is some sort of magical residue from the portal. Like a footprint.