Hidden Valley

Hidden Valley is a location in Generation 1

Hidden Valley is secure from the prying eyes of humans in the the farmlands around it, a perfect base from which the otherwise conspicuious Dinobots can watch for Decepticon activity... or just relax and enjoy its delicious salad dressings.

Fiction

Find Your Fate Junior

The Dinobots were on watch (read: goofing around) in Hidden Valley when the Insecticon Bombshell attacked them with cerebro-shells, causing them to run amok. Only Swoop escaped un-brainwashed.

Bombshell ordered the Dinobots to head to Autobot Headquarters, destroying everything along their path. They did so, destroying several farms in the proscess until intercepted at Bandit's Bluff. DSB

From Teletraan I: The Transformers Wiki, a Wikia wiki.