It's not a real place. It just means you are down in the dumps/bored.
They got their name from being stuck in one place
hot, humid air with little or no wind
break it down and you'll get doll drums. so a hot girl who plays drums
In "The Phantom Tollbooth," the Doldrums represent a state of boredom and apathy. It is a place where nothing ever happens, and those who enter find themselves stuck and unable to move forward. The Doldrums serve as a caution against becoming stagnant and complacent in life.
The ship got to the doldrums where there was no wind.
the doldrums
The word "doldrums" is a noun. It refers to a state of inactivity, stagnation, or low spirits.
The areas called the Doldrums are near the equator. In the doldrums, persistent low pressure systems are caused by rising hot air, creating long periods of calm winds. To make way in the doldrums, a sailing ship depended on local storms, squalls, or passing tropical storm systems.
The doldrums are being sad and blue. Feeling depressed and uninspired.
I have been in the doldrums ever since Batool (a girl's name) left me.
The doldrums are the dumps, it means feeling sad or blue, or downhearted.
The expression "down in the doldrums" originated from maritime terminology. The doldrums refer to a region near the equator with calm winds, causing sailing ships to be stranded. Therefore, being "down in the doldrums" means you are feeling low or stuck in a situation.