Trollheim Bridge

Referred to as Trollheim, the Trollheim Bridge, and the Trollheim Plank Bridge, it describes a section of the Mount Vernon Trail just south of Roosevelt Island. This section of the trail is composed of wooden planks and becomes treacherously slippery when wet or icy. Virtually all regular cyclists have gone down here at least once and innumerable injuries have been the result.

Reference
The word "Trollheim" is a compound word composed of: Hence, Trollheim means "Troll home" and is found to be very annoying.
 * "Troll" which is an Internet slang term for a person who purposefully tries to annoy or abuse others online or the act of a troll
 * "heim" which is the German/Norwegian equivalent of the English word "home"

Location
Trollheim Bridge can be found here: https://goo.gl/maps/vxfpz9VnVVT2

Forum Introduction

 * Post pics of your injuries http://bikearlingtonforum.com/showthread.php?p=88189#post88189

Links

 * Heim https://en.wikipedia.org/wiki/Heim