From publisher blurb:
While the scenario, the ongoing quest, provides the meat in any campaign, a good Gamemaster needs more ingredients to add substance to the adventure, she occasionally needs to spice up slower parts of a gaming session. With that in mind Big Finger Games offers the GM’s Cookbook line of pdfs.
GM’S COOKBOOK: Dungeon Jumpstarters #1 is designed to provide you with 20 quick and easy ideas to get the party into the dungeon.
Maybe the adventure you had planned went off the rails, or you’re just having an off night, whatever the case sometimes you just need to get the adventurers back underground for one of those ubiquitous dungeon crawls.