Its called a volcanic cone
a funnel shaped vent at the top of a volcano is a crater
A cinder cone volcano
If you look at the volcano side ways that little curve on top is called a cradle i think
It’s called an estuary.
No, funnel spiders do not weave traditional orb webs like other spiders. Instead, they construct funnel-shaped webs that act as a trap for catching prey. The spider waits at the narrow end of the funnel for vibrations that signal prey is near.
Snorks
The vent
Vent .
The top pit of a volcano is called the crater. It is the opening at the summit of the volcano where volcanic activity such as eruptions and gas emissions occur.
A crater in a volcano is a bowl-shaped depression at the top of the volcano where volcanic activity usually occurs. It is typically formed by the collapse of the volcano's summit or by explosive eruptions that remove material from the top of the volcano. Craters can vary in size and shape depending on the type of volcano and its activity.
One example of a volcano with a broad shaped gently sloping cone is called a shield volcano. These volcanoes are characterized by their low profile and large base, typically formed by the eruption of low-viscosity lava flows. An example of a shield volcano is Mauna Loa in Hawaii.
A volcanic vent or fissure (depending on the type of eruption).