Ray Bradbury is a Grand Master of Science Fiction; this is a set of 13 of Bradbury's stories adapted to radio. The adaptations and the productions are great.
The selection of 13 stories are pretty diverse; some are hard-core sci-fi, other are more fantastic ("There was an Old Woman," "The Wind"), and some of them aren't necessarily sci-fi (or fantasy) at all ("The Screaming Woman," "The Ravine"). As is often the case with Ray Bradbury, the sci-fi/fantasy elements are often peripheral rather than key to the "real story," namely the psychological examination of the characters.
These were originally 13 28-minute radio shows, which makes for a few production "funnies." Each chapter is it's own radio show, with an opening intro section (which perhaps should have been edited out) and closing credits. Also, one or two of the stories (especially "The Happiness Machine") are clearly being stretched out to fill up 28 minutes.
I enjoyed "Bradbury 13" but didn't outright love it. (I could probably say the same about many of Ray Bradbury's works that I have read.)
Doyle's "Lost World," which introduced his "Professor Challenger" hero (personality of Sherlock Holmes, physique and personality of a linebacker). The story is pretty straightfoward...Challenger, on a trip to the Amazon, found a plateau where living dinosaurs could be found. Nobody else believes him, but a party is formed to investigate his claims, and they have various adventures before returning to London.
The story is fun entertainment. It is listed as a kid's story by Audible and it is generally appropriate for kids (assuming they can handle heroes begin chased by dinosaurs). The story is rather dated (it was written in 1912), and this production tried hard to keep the period flavor intact without keeping the attitudes (e.g. in the European heroes' interactions with the South American natives) that many find unacceptable in the 21st Century. In general, they did a good job on that score.
The production is fun, with multiple voices acting out the parts (there are 4 main roles and about 8 minor ones), and it's a quick couple of hours listen. The production values are so-so, with a bit of crackle and hiss (when transcribed from cassette tape?) and some of the voices are hard to make out.
Overall, worth a listen.