Translation of bristle in Spanish

In the end we went up to the tower. We have never climbed so steep stairs ever before and once up we were really afraid to go down. There were no safety installation at this tower.
Nice to meet you. I am learning English but my English is very bad, we could exchange messages in Spanish. I have got all the chat applications on my laptop. Sorry again for writing with many mistakes.
The drive to these lagoons was not easy. The jeep did not have air conditioning, so that in the sun it would get extremely hot and in the shade extremely cold. The jeeps were around 15 years old.