Portable Seismograph is dropped by Subterranean Threshers.

You deploy it on the bridge closest to the north-east end of Thor Modan in Grizzly Hills ^{[70, 13]}

to acquire the [Thor Modan Stability Profile].

As a quest objective Edit

•  [75] Steady as a Rock?

External linksEdit

Item	Object
Battle.net (EU) Wowhead Thottbot DB MMO-Champion	Wowhead Thottbot DB MMO-Champion