The Drum Rockies are the namesake of Drum Island thanks to their drum-like format. Because of their steepness, climbing the mountain is extremely difficult, but not impossible for people with superhuman endurance or animals adapted to vertical climbing. Lapahns are known to live in the hills at the base of the Drum Rockies, where they might start avalanches if provoked.
According to Dr. Kureha, the peak plateau of the highest of the Drum Rockies lies more than a staggering 5000 meters above sea level.
The Drum Castle is where the royalty of Drum Island once lived, being located at the summit of the highest mountain. After Wapol departed his kingdom to escape the Blackbeard Pirates, Kureha took the place over for herself, turning it into her new home.
The Drum Ropeway is the main method of travel between the tallest point of the Drum Rockies and the rest of the kingdom. It's a tram-way system that uses a trolley to transport passengers up or down the mountain.
Hiriluk used to live in a small man-made cave located on the lower mountainside of one of the Drum Rockies, accessible through a ladder. He also used this place as a workstation for his medical experiments.
- ↑ 1.0 1.1 One Piece Manga and Anime — Vol. 15 Chapter 132 and Episode 79.
- ↑ One Piece Manga — Vol. 15 Chapter 135, Luffy and Sanji confront Lapahns.
- ↑ One Piece Manga and Anime — Vol. 16 Chapter 139 (p. 16) and Episode 84, Doctor Kureha expresses disbelief at Luffy's feat of climbing to her castle with his bare hands while carrying two people.
- ↑ One Piece Manga — Vol. 16 Chapter 142.