If you are interested, you can watch the whole episode, "Arabian Adventures: the Secrets of the Nabateans, Episode 1" (22:53), and, futhermore "Arabian Adventures: the Secrets of the Nabateans, Episode 2" (22:48). Both episodes have subtitles and can be recommended for C1 students, some of the most interesting words is episode 1 are: a trail,to forge, harsh [conditions], swallowed up, to thrive, a clue, to delve [deep] into, to carve, a gorge, a threshold to [a city], a treasury, breathtaking, exquisite, a frieze, a tomb, a façade, a jar, a shooting, a pediment, a horn, an statement, a sandstone, a shepherd, [to play] hide and seek, a toll, a magnet, pottery, a shard, a karat, a whiff, frankincense, myrrh, off the beaten track, to eat your heart out, to dig, a shovel, brooding [rock], unrelating, impressive, a deity, to worship, a stepping stone, a scarf, a drought, a date, a dromedary, a one humped camel, an insight. Whereas in Episode 2, you will come across: a bubbling [mountain], massive, a towering [monument], a clue, a stonemason,a façade, a burial, to carve, a clean-cut [appearance], to chisel, smooth, a forerunner [of Arabic], thrilling, a nerd, to overlook [the trade route], a grid-like [system], to kick off, a lawn mower, bumpy, a timeline, to [hit] gold, skyscape, to make [somebody] tick, an artefact, a headdress, a thrill, awe-inspiring, grinding, resourceful, a priestess, to round up [our knowledge]. An introductory article to this BBC series can be found on "Alice Morrison explores ancient Nabataean secrets in new BBC series", which can be easily read by B2 students and above, with some interesting words like: to dwell, to span, to be crowned, to carve, a tomb, a sandstone, to delve into.