Journey to the Summer City

From the introduction:

The cool days of spring have given way to the warmth of summer, bringing the dwarves of Citadel Hoarfrost forth from their mountain home to buy and sell goods throughout the surrounding lands. On the Cold Road, one such party of young dwarves makes their way toward the summer city of Bildoobaris with a wagon of glacial mead for trade. It is a simple enough task, but sometimes it's the simple tasks that cause the most problems.

A 2-hour adventure for five 2nd level dwarven characters