Fantastic Blowhole in Subterranean Animism
The Fantastic Blowhole (幻想風穴 Gensō Kazaana) is a gloomy cave that leads further into the Underworld, where the next layer after here is the Deep Road to Hell. Apart from the known fact that Kisume and Yamame Kurodani are known to lurk around here, there is not much known about this place, nor is its location in Gensokyo. Apparently, the hole is soaking wet, and the wind that comes through here is strong. Rocks are also known to tumble down here.
- Subterranean Animism
The Blowhole first appeared on Stage 1 in Subterranean Animism, where Reimu Hakurei or Marisa Kirisame will fly through here, fighting various fairies and sunflower fairies, but also destroying various rocks that fall down on them. Kisume is the midboss, and Yamame Kurodani is the boss of the stage. The heroine will defeat these two with little reason, since it made Yamame think that the heroine was talking to themselves, but they were actually talking to a youkai from above ground via communication. The heroine will travel to the Deep Road to Hell after here, going deeper into the Underworld.
- Double Spoiler
The hole appears in Double Spoiler on stage 3, where Aya Shameimaru and Hatate Himekaidou encounters Yamame Kurodani, Kogasa Tatara and Kisume to try and take photos of their danmaku. It is not explained why Kogasa is lurking around this area. The previous stage is at the Deep Road to Hell, whilst the next stage is at the Untrodden Valley on the Youkai Mountain. There are 8 scenes total on this stage.