2018-07-11 16:43:30 UTC
The protagonists are camping on the planet Venus, with the incredibly high temperature and crushing pressure. They use force field bubbles as space suits and camping tents.
I remember one of them mentioning the "Reynolds-wrap River" nearby, a river of molten aluminum.
IIRC at one point they travel using a sort of bicycle powered dirigible, which is also sheathed in a skin-tight force field bubble.
Does this sound familiar?