Spot the difference?

After my knee replacement, I needed to change the position I painted at and this gave me the much needed impetus to dig out my oils and revive this side of my work. It takes a while longer to do, but it also allows me to add in some really vibrant colour and detail. Can you sopt the difference in tonality and detail from my usual watercolur style? This painting is from Arches National Park in Utah a truly fabulous place.