Rightio...
Tell me your view on lava, what it's useful for in battle and it's strengths and weaknesses. Also mention to me Kurotsuchi's version of Lava, being quicklime, and a little bit about her use of hot lava in the Anime/manga (as a hint, it's slightly different to the way Mei uses Lava).
Just to not right out, Lava is neutral to water now, it used to be weak or even double weak once upon a time... Also, do you know how it compares to Dark release?
Lava is, in RL, what's found really deep inside the ground and it comes to the surface through erupting volcanoes where it's thrown to the surface to cool down and give us, humans, some good minerals from the depths of earth.
Lava ,in NV, is a advanced elemental chakra type which is made by combining the earth chakra and fire chakra both used as source of the nature. Similar to steel release in the elements, but steel uses fire chakra as manipulation to earth not as a source of extreme heat that melts the rocks creating lava.
Kurotsuchi's version of Lava release, AKA quicklime, is one of the mainstream versions of lava release in Iwagakure (as shown when they were attacking the Juubi, there was a shit load of Iwa ninja using quicklime). It creates a sticky substance which can be turned to cement if used with the correct suiton jutsu.
Actually, I searched the Naruto wikia today and found nothing about Kurotsuchi using any kind of hot lava jutsus, only quicklime. If the naruto wikia and me are wrong please enlighten me with your lava-ing knowledge.
According to weaknesses/strengths thread the absorption ability of dark release mentioned nothing about lava but I'll assume that Lava suffers double strength since it would be the same as earth release. The releasing ability of dark release is mentioned to be weak to Lava release.
hope this will meet your satisfactory ^^