Roger Peel, UK shares photos he took on a trip to Argentina in 2005.
Also a peek at Roger's private collection in the UK

Oreocereus species Trichocereus pasacana Cacti share space with large Pampus Grass Eulychnia iquiquensis A magnificent specimen of a crested Stetsonia coryne Denmoza rhodantha Roger Peel cozying up to Soehrensia bruchii (more currently known as Echinopsis bruchii) Oreocereus celsianus Echinopsis leucantha A small part of Roger Peel's private collection at home in the UK

(c) Photograph Copyright of The Amateurs' Digest and Roger Peel, UK