But just off the main road to the Naivasha national park, are hectares and hectares of greenhouses as far as the eye can see.
However, there are thought to be 140,000 hectares of out-of-bounds areas on UK courses, which environmentalists believe could be put to good use for wildlife.
According to the Americans' latest estimate, there were 136,200 hectares of coca in Colombia last December, up from 122,500 a year before, although 58,000 hectares were eradicated in that period.
Five hundred years ago, there were 30,000 hectares of intertidal saltmarsh, a crucial wildlife habitat and effective sea defence, along the Essex coast.
Figures released in March estimate that in 2016 there were 188,000 hectares of coca in Colombia – used to produce 710 tons of cocaine.
There are 453,000 hectares of vineyards in China, which is roughly equal to the U.S. total (380,000 hectares) plus Germany (98,000 hectares) or just over half the vineyard area of France.
The total area of GM maize grown in the EU in 2012 was 129,000 hectares, of which more than 90% was grown in Spain.
There are 2bn hectares of degraded land in the world, he argues, and much of that land can be restored to help pull carbon from the atmosphere.
And there are 200 hectares of unlined pools at Almasfuzito, not 40.
Yet there are 100,000 hectares of green belt within the M25 alone.
