A bit hard to judge from my vantage point, but I reckon the stock standard Jeep would do OK. You'll be surprised at what 4WDs can do. Slow and steady. VW Beetles surprise in this regard too - generally a 6 inch ground clearance and 16 inch wheels - slow and steady and they'll go just about anywhere.

Bummer. First thoughts are best thoughts!

Great composition. I like the implied link between the foreground outcrop and the spiky peaks on the skyline, and how the diagonal formed by the top of the outcrop parallels the profile of the centre slope. Clever incorporation of the primary landscape elements at different scales, and then there's the bonus of all the cacti and other ground covers - an early Spring response to recent rains I'm guessing.

Oh this is nice! These prickly guys featured before but now they're really in the limelight - good call.

Hard choice but I prefer this one. The diagonal row of teddies isn't as obvious as next door, and it's a bit darker, but the different pov has captured interesting clouds that lift the overall image significantly imho.

And you just happened to have the GR handy! Well done.

Shady areas lifted nicely and sharpening efforts look good. I'm assuming the four central figures are the main subject, in which case I find the ones to the left and the tree trunk impact on the right somewhat distracting. Wondering if application of the "Darken/Lighten Centre" filter in NIK Color Efex might overcome this - I've found it a useful tool in these circumstances with a much more gentle impact than any of the vignette filters.

Perplexed. I can't notice any difference between this and the original; what am I missing?

Liking the mix of green and red. Are the latter some type of bromeliad?

In specialist's waiting room right now - I'll check the video later tonight. It does seem like a quite a luxuriant setting.