Michael: trying a photo

I haven't sent any photos yet, so let's give this a try.
Potosi was once the richest city in the Americas due to the enormous quantities of minerals, primarily silver, extracted from a mountain that forms the backdrop of the city. Mining has been in continuous operation for 500 years.
There is a museum of mining on the mountain. The surprising thing is that the museum is INSIDE the mountain, with visitors using the same access portal as the working miners. Here's the team and our hosts, suited up for entry.
Michael