Ones that, when you press 'a' on them, say a Pokemon might be able to smash it when you don't have a Pokémon with the move Rock Smash on your team, or haven't obtained the badge to use it outside of battle yet. They're a sort of triangular shape with cracks in them (see image in related links).
in rocks you smash
rock smash any rocks that can be smashed.
all gen.4 fossils by breaking rocks (rock smash)
The root fossil is only on Pokemon soul silver by smashing rocks with rock smash in the ruins of alph.
i think u have to use rock smash on rocks and a fossil will be found in the rubble
You can find some in the north of Cianwood City, just use Rock Smash on the rocks there and you might find a Heart Scale!!
You smash rocks at the ruins of alf you might find a heilex fossel take it to pewtwer city and they will make it a omunite. Evolve it into Omustar.
There is no underground because you are in a different region. Only Sinnoh region has the underground, You have to find shards and heart scales in rocks. To do that you have to use rock smash.
You can get an: Old Amber Helix Fossil Dome Fossil These are found at the Ruins of Alph by using Rock Smash on rocks. Note: You may also get other items/Pokemon by smashing rocks.
Heart scales can be found by crushing the rocks north of Cianwood City with a Pokemon that knows rock smash. They are rare, but they are there.you can smash rocks in cianwood or the route of the bottom near fuschia city
No
union cave i think