Heaven
Of the two chasms which were formed when ceilings of two underground caves collapsed, this bigger one resembles a green, peaceful heaven with evergreen shrubs and trees growing on its bottom. It is possible to reach the bottom, which also has ruins of a monastery, by climbing down ancient stairs 452 of them, and as every descent has an ascend, it is not advisable for those having heart and respiration problems, especially in summer.
Hell
A post-apocalyptic abyss full of sharp stalagmites when compared with Heaven, the bottom of this 78-metre deep pit is, however, full of deep green -even emerald green- plants which look even more peaceful and exotic than Heaven's. This was where Zeus was believed to imprison Typhon in ancient times. Unlike Heaven, it is not possible to go down into the Hell, with only a balcony-like viewing area hanging over the cliff of the pit.