101Leafy researched the games.
Volcano Alphorn

Fire-elemental Horn. Was used by ancient people to calm an erupting volcano.
| Class | Hunting Horn |
|---|---|
| Rarity | 10 |
| Attack | 1404 |
| Fire | 300 |
| Affinity | -10% |
| Slots | 1 |
| Price | 120,000z |
Upgrades
| Upgraded from | Lava Alphorn |
|---|
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 736.