Translation of schwül

The image seems so peaceful, calm and untouched. On the contrary, the topic is about death, brutality and the confrontation (the fight) between strong and week, between the spide and the moth.
The tour started soon and we first visited the ruins nearby, which was a ten minutes drive. A tour guide introduced us to each and every pyramid and told us stories about practically every stone.
Yes, depending on demand. Vocabulix is a free service, but no one wanted to finance the German voices yet, which cost a little bit, so we started with Spanish and English which has higher demand.