This is a concept art for a game. Its set on one of Saturn's moons, Titan. Tanker-like spaceships carrying "Methane capsules" extracted from this lakes. There´s another images in which i depict the extraction towers. This was done in Photoshop and actually didn´t take too long, about 3-4 hours from zero to finish. I´ve used a set of maybe 10 brushes that I´ve created and customized which were particulary fast to draw the sky and land details.