Volcano Eifel is a ROM hack created by GameProfi64 which was included in SirRouven1003's Hack Pack. Currently, this hack is only available in German.
Gameplay[]
This hack uses the vanilla overworld areas from SM64, and its only custom level is accessed by entering the painting for Bob-omb Battlefield. The only changes to the overworld areas are that the front doors to Peach's Castle have been moved to right in front of Mario's starting point in the Castle Grounds, eliminating the need to bypass Lakitu Bros.' cutscene.
This level, called Vulkan-Eifel, contains six different Stars to collect, however, the red coin Star shares the same ID as the first Star, meaning that there is no way to mark Act 4 as completed without editing the ROM or the save file. Because of this, the final Star cannot be obtained through ordinary means, as that Star only appears on Act 6.
Stars[]
Act 1: Bestiege Die Eifel[]
All the way up at the top end of the course, head into the cavern ahead of Mario's starting point and into the cave at the top of the slope on the left (not the one filled with lava). Keep following the path up through some wallkicking sections and along a grassy path, then platform up to the cliff tops via the grassy steps at the end of the path..
Act 2: Nach Der Bruecke Rechts[]
Head into the cavern ahead of Mario's starting point (with the Bully's/Goomba's) and follow the path. which endsin front of a tunnel behind a false wall. A Koopa shell will appear here, which can be used to surf across the lava in the tunnel ahead and reach the Star.
Act 3: Nach Dem Weg Immer Weiter[]
Use whatever means necessary to jump up onto the upper ledge ahead of Mario's starting point (I recommend lava bouncing off of the stream next to that glitchy barrier), then drop down onto the Star in the section below. Way easier than the intended route.
Act 4: 4 Rote Muenzen[]
This red coin Star is spawned by collecting 4 red coins scattered throughout the level. As this Star shares its ID with the first Star, there is no reason to collect this Star.
Act 5: Der See Mit Heiss-Serkeit[]
Not Act specific; follow the same path as in the first Star, but this time, when you get to that small bridge, pass through the false wall just before it on the right, and grab the Star at the end of the tunnel.
Act 6: Aller "Anfang" Ist Leicht[]
You'll need to edit your save file to mark Star 4 as being collected to access this Star, which only appears on this Act. It's in the tunnel to the left of Mario's starting point. The Bob-omb Buddy says you need a Koopa shell to reach it, but it's pretty easy to slope kick through the tunnel.