The volcano is currently in its 51st phase of eruption, but lava flow is rapid only near the summit and in underground tubes, although it can be seen entering the ocean at sea-level.
(The volcano; is; T:currently; in its 51st phase of eruption) (lava flow; is; rapid only near the summit and in underground tubes) (it; can be seen; ) (it; entering; the ocean; L:at sea-level)
The volcano lava flow it it
is is can be seen entering
T:currently in its 51st phase of eruption
rapid only near the summit and in underground tubes
the ocean L:at sea-level