Beetle, Devastation (CR 50)

Colossal Vermin
Alignment: Always neutral
Initiative: +10 (Dex); Senses: Darkvision 300 ft., Listen +6, and Spot +6

AC: 72 (-8 size, +10 Dex, +60 natural) touch 12, flat-footed 62
Hit Dice: 128d8+2,304 (2,880 hp); DR: 20/-
Fort +84, Ref +52, Will +42
Speed: 70 ft.
Space: 100 ft. by 150 ft./20 ft.
Base Attack +96; Grapple +128
Attack: Bite +104 melee
Damage: Bite 25d10+24
Special Attacks/Actions: Trample 30d10+24, acid cloud
Abilities: Str 42, Dex 31, Con 46, Int -, Wis 10, Cha 9
Special Qualities: SR 60
Skills: Listen +6 and Spot +6
Advancement: None
Climate/Terrain: Any land
Organization: Solitary or cluster (2-5)None
Treasure/Possessions: None

Source: Epic Level Handbook

Trample (Ex): A devastation beetle can trample Gargantuan and smaller creatures for 30d10+24 points of damage. Opponents who do not make attacks of opportunity against the devastation beetle can attempt a Reflex save (DC 90) to halve the damage.

Acid Cloud (Ex): A devastation beetle exudes a constant vapor that radiates outward in every direction for 60 feet. This vapor deals 6d6 points of acid damage each round to anyone caught in the cloud.

Devastation beetles are ravenous when they first appear consuming anything and everything in the vicinity.