For much of the first half of 2021, a lava lake sat perched within Kīlauea's summit Halema'uma'u crater. Since May, the Hawaiian volcano has mostly fallen quiet but it seems like that could be changing. The USGS Hawaiian Volcano Observatory has upped it's alert status for the Big Island's most active volcano to orange after a swarm of earthquakes rattled the summit area over the past few days.
Swarms of earthquakes are common on Kīlauea. Sometimes they are related to faults that cross the island, created due to the weight of the volcanoes on the Pacific plate. This is why Hawaii sometimes feels fairly large earthquakes up to M5.
