The sun!!! Most people think that you not get sunburned if the sun is not that visible; by cloudy weather for example. Very wrong thinking ;-)
Doctors here say that the Potosí sun is as strong as in the Sahara! So, keep always protected by the sun. Use a hat, sun block and umbrella and do not stay to long in the open burning sun…
Be careful with Peyote is ilegal in this country so if the police caught you, you are lost. It all depends on you my advice is not to cut them.