Right after I posted my previous post, B.P. came to Afelahn and told me about their discussion about another visit.
Someone suggested to modify one of our “critters” – someone could link in with it, put it on the ground and link out quickly, while the critter could gather data without anyone being endangered unnecessarily.
Of course, the critter almost certainly will be destroyed over time – the aggressive corrosive gas will destroy most materials we know.
Interestingly, the suits materials seem not to be bothered by the gas – on the other side, if the depicted events in the “Book of D’ni” really happened that way, one of the explorers, an averonese, even stepped into a nova while wearing one of the suits – and survived, though he was badly hurt. So the suits should withstand any possible dangers, even the deadliest ones.
Maybe we can apply D’ni materials, for example, deretheni (see the DPWR-Article about this kind of stone) to the critter… we don´t really like the idea of losing one of them.
Yeah, it´s somewhat pathetic, but we grew to like these little fellows.
By the way, I think, I can show you one of my sketches, depicting Critter 01 – bear in mind, however, that my scribbling abilities are somewhat – minor. Don´t expect too much realism 
Samples our scientists took from the gas sucked into the ventilation system suggest that this is a kind of chemical compound previously unknown on earth. They aren´t even sure, what elements this consists of – not really surprising, it is another age, another dimension after all.
We had had a theoretical discussion some months ago about ages and the astonishing similarities between the elements abundant there – but we also came to the conclusion, that it only was a matter of time, when we would encounter previously unknown matter that doesn´t exist in other ages. This stuff seems to be such matter.
It lost its corrosive capacity after some minutes, and is deemed rather harmless now – but we wouldn´t take a chance, it was sealed in a vacuum vessel (of D’ni origin) and brought to Resehren. In case it breaks and is contaminating its surroundings, the age can be quarantined.