Scattered throughout the Glacial Cave are penguins. They wield a Wooden Pickaxe and stand on the scaffold found across the caves. The penguins have idle dialogue and mention Hendrik, who can be found in the Hot Springs.
Anywhere between 1 and 4 Frozen Treasures spawn every 10 seconds at given locations within the ice in the Glacial Cave. The player can obtain Frozen Treasures by breaking the Ice Blocks they are inside of.
["Echolocator","Horseman's Candle","Bat Firework","Bat Person Armor","Spooky Armor","Intimidation Artifact","Intimidation Ring","Bat Artifact","Bat Ring","Candy Relic","Candy Artifact","Candy Ring","Candy Talisman","Trick or Treat Bag"]
["Snowball","Ice","Red Gift","Green Gift","White Gift","Gift","Frosty the Howitzer","Frosty the Snow Blaster","Frosty the Snow Cannon","Defend Jerry's Workshop"]
["Glacial Artifact","Glacial Ring","Glacial Talisman","Glacial Fragment","Glacial Cave","Snow Minion#XII","Ice Minion#XII","Snow Necklace","Snow Gloves","Snow Belt","Snow Cloak","Gold Gift Talisman","Purple Gift Talisman","Blue Gift Talisman","Green Gift Talisman","White Gift Talisman","Reindeer Pet","Einary","Jingle Bells","Fried Frozen Chicken","Frozen Chicken","Gift Compass","Chicken Race"]
["Winter Island (Item)","Fragmented Cryopowder","North Stars","Golden Gift","Gift the Fish","Snowman Pet","Grinch Minion Skin","Present Stack","Snow Suit Armor","Gingerbread Man Minion Skin","Santa Minion Skin","Winter Disc","Battle Disc","Tall Holiday Tree","Bottle of Jyrre","Ice Rune","Snow Minion","Skill XP Boost Potion"]
["Glacial Scythe","Winter Water Orb","Rusty Anchor","Salt Cube","Flake the Fish","Walnut","Nutcracker Armor","True Ice","Hunk of Blue Ice","Hunk of Ice","Ice Bait","Yeti Rod","Auger Rod","Winter Rod","Ice Rod","Festive Sinker","Icy Sinker","Reindrake","Nutcracker (mob)","Grinch","Frozen Steve","Frosty (mob)","Yeti"]
["Snow Minion#XII","Ice Minion#XII","Snow Necklace","Snow Gloves","Snow Belt","Snow Cloak","Gold Gift Talisman","Purple Gift Talisman","Blue Gift Talisman","Green Gift Talisman","White Gift Talisman","Reindeer Pet"]