This little text is talking about types of clouds.
夏天,雷雨到来之前,在天空先会看到厚厚的积云。积云如果迅速地向上凸起,形成高大的云山,群峰争奇,耸入天顶,就变成了积雨云。
From zdic.net I see that 争 can mean: 4。 怎么,如何(多见于诗、词、曲):~不。~知。~奈
形成高大的云山,群峰争奇,
1. form big high cloud mountains, (whose) peaks are very (争, 怎么, 这么) strange
or it means:
- form big high cloud mountains, (whose) peaks compete (争) in strangeness (of form)
Or something else entirely?