Not according to the Wiki, and my own experience (albeit in 1.6.4); lava won't even burn blocks below it even if there is air around it since it can only set blocks above it on fire (e.g. a wood floor is safe from lava placed on top of it, including around the edges of the lava; by contrast, fire itself has different spread mechanics, including being able to spread up to one block downwards):
Lava can also destroy blocks like tall grass and torches when it flows into them regardless of whether they are completely surrounded but this is separate from burning (water does the same thing as it is a property of liquids).
Not in 1.15.2 either, this leafblock has been there for over 2 hours.
One placed in the top layer of lava burned away in less than a minute.
However that in itself wouldn't stop lavalogged blocks from burning even if all exposed surfaces of the block were lava since Minecraft would be looking for air in the blocks next to it, not in the block itself.
(Since waterlogged blocks, and therefore presumably lavalogged blocks in the unlikely case that they were added, are separate blocks, not a block and water/lava in the same blockspace, they could be made unburnable if Mojang chose.)
Lol, I really didn't consider the interactions of lava-logged blocks and water, that really has me a bit stumped. One option, as Hecalobular said, is that it become cobblestone or obsidian logged, which while it would look incredible, I would be hard as all heck for Mojang to code, and would set a dangerous precedent for them that every partial block can be filled with any kind of block, and would entitle the fans to thousands of redundant blocks that just have a block with another one inside of it. Assuming it did work like that though, I would assume that, to make it simple, It would mine the same as cobblestone or obsidian, and have the same blast resistance.
Another option is to have the two not interact at all, which I don't like, as while it would fix any problems, it would be really awful to look at and would ruin the fragile realism of this game. These are the only two options that wouldn't have to fundamentally change the physics in this game, and neither of them are that great :/ It kinda makes a little more sense why this may not yet be in the game.
Ignoring that, for it's uses in parkour, I cannot stress enough how much it would help it. Two examples are stairs and walls. With a the-floor-is-lava kind of parkour map (like a cave parkour map I am working on now) being able to lava-log those blocks would make for some very unique jumps. Jumping off of 1/2 of a block or a wall over lava is something very dramatic I would love to utilize in my map. In adventure maps, it would be really tense, running quickly out a nether fortress, with cracks filled with lava right under your feet, and other aesthetics. It would also be hilarious to troll your friends by putting a lava-logged stone stair in a place in their mine you know for certain they will mine into to meet their unexpected end.
Proof? I have hard code evidence that lava will only burn blocks if there is air adjacent to them, and while it is for 1.6.4 (nearly 10 versions behind!) Hexalobular provided convincing evidence that this behavior is still the same, as does the Wiki (I don't consider the Wiki to be very trustworthy due to its abundance of outdated or outright false information but it is correct in this case):
if (this.blockMaterial == Material.lava)
int var6 = par5Random.nextInt(3);
// Makes up to 2 attempts at setting a fire block within a 3x3 area on the layer above a lava
// block, or 5x5 two layers above (favors the first layer, while layer 2 is only checked 1/3
// of the time).
for (var7 = 0; var7 < var6; ++var7)
par2 += par5Random.nextInt(3) - 1;
par4 += par5Random.nextInt(3) - 1;
var8 = par1World.getBlockId(par2, par3, par4);
// Note that fire can only be placed in air blocks (var8 == 0).
if (var8 == 0)
if (this.isFlammable(par1World, par2 - 1, par3, par4) || this.isFlammable(par1World, par2 + 1, par3, par4) || this.isFlammable(par1World, par2, par3, par4 - 1) || this.isFlammable(par1World, par2, par3, par4 + 1) || this.isFlammable(par1World, par2, par3 - 1, par4) || this.isFlammable(par1World, par2, par3 + 1, par4))
par1World.setBlock(par2, par3, par4, Block.fire.blockID);
else if (Block.blocksList[var8].blockMaterial.blocksMovement())
// Makes 3 attempts to place fire within a 3x3 area above lava, only checking if the
// block below is flammable.
if (var6 == 0)
var7 = par2;
var8 = par4;
for (int var9 = 0; var9 < 3; ++var9)
par2 = var7 + par5Random.nextInt(3) - 1;
par4 = var8 + par5Random.nextInt(3) - 1;
// Note that fire can only be placed in air blocks
if (par1World.isAirBlock(par2, par3 + 1, par4) && this.isFlammable(par1World, par2, par3, par4))
par1World.setBlock(par2, par3 + 1, par4, Block.fire.blockID);
I don't use it myself but I see the potential of it for maps or survival/creative. Whether for fences, chests, slabs or anything burnable or not. With water sure for underwater bases or making things not look off I can see a reason but for lava things blending in for secret treasures in maps or maybe preventing fire on blocks like signs/chests as it can be annoying sometimes could be a useful reason in builds. (obviously others can apply that's just what came to mind).
If Towelette's downloads https://www.curseforge.com/minecraft/mc-mods/towelette isn't a clear sign (even if on a niche modloader like Fabric and there probably is a Forge mod like it I just don't remember, or other mods have the feature for their blocks), of the audience (even if for a mod) then it's easy to see why it would be useful for builds, redstone and more.
And besides, why start with one when it can have benefits for the other. Even modders got waterlogging/lavalogging more fleshed out for block support then Mojang did (which isn't surprising) but it shows the potential of the feature and audience is willing to use it just like when they provided command blocks, datapacks, redstone and more.
this idea is exactly how it sounds, all of the blocks that could be surrounded by water can now also be surrounded by lava, and lava can flow from these blocks as well, just like water-logged blocks.
I’m honestly really surprised this isn’t already a feature, it would open up a lot of possibilities for buildings, parkour maps (emphasis on HOW MUCH this would help out parkour maps), adventure maps, etc. I have always been so frustrated making parkour, and being limited in my creativity because of this.
That is silly as it would have... Wait..... How many uses would it have? Oh yeah, i remember, ZERO. Lava would burn most blocks and it would have no use.
What with Iron Bars? xxxx-stone slabs, walls, stairs? Glass panes? Items made from Nether Fungi Stems?
These blocks if lavalogged could let me build supports for my buildings, like bridges, in lava, without creating stupidly-looking pockets of air.
Also, compact liquid storage tanks (as seen in attachment, 12 stairs let me store 12 buckets worth of water in 3x2x2 space)
About dangers of traps discuss with Hexalobular, he seems to be concerned with that for a reason.
I don't suppose it would really be a problem one was likely to come across very often naturally but I'm thinking trying to tunnel through lava-logged blocks could be a nightmare. Sorta like the traps for the unwary caused by the redstone ore bug that makes it hard to place water next to redstone ore.
It's annoying to try to clear water from shipwrecks with their water-logged stairs and slabs, lava-logged stairs and slabs could pose a real danger.
How are you thinking lava-logged blocks would react to coming in contact with water?
Would they turn into cobblestone-logged blocks, or would the lava be impervious to water, or something else?
Let me pour lava on waterlogged blocks...
Well, the water is impervious to lava. As seen in attachment. So the same should apply in lavalogged blocks with water on it.
New generation of traps? We regularly get supplied with tools to create traps, with the most recent ones being observers and bubble columns (soul sand and magma underwater).
Tested, I made a tank for lava from wooden planks and left it for over an hour with inventory on (that prevents pause, for proof it snowed over the tank) Tank was completely sealed and completely filled, with no air inside or gaps.
Lava needs air blocks in proximity to wooden blocks to cause fires