# Tyatya

- **Country:** Russia
- **Coordinates:** 44.350833, 146.256389
- **Type:** Stratovolcano / somma volcano
- **Listing:** Ultra
- **Location:** Kunashir, Kuril Islands, Russia
- **Map Size:** 220
- **Other Name:** Chachadake
- **Elevation M:** 1822
- **Prominence M:** 1822
- **Last Eruption:** June 1981
- **Label Position:** right

Tyatya (, also spelled Tiatia and known as Chachadake (爺爺岳) in Japanese) is an active volcano located in the northeastern part of Kunashir Island, Kuril Islands, Russia. It is the highest peak on the island with an elevation of . thumb|150px|left|Relief Map

![Photo of Tyatya](https://upload.wikimedia.org/wikipedia/commons/b/b2/Tyatya_volcano_in_Russia_-_2010-09-11.jpg)

**Source:** https://en.wikipedia.org/wiki/Tiatia (Wikipedia, CC BY-SA)