A type of naturally open, rocky grassland ecosystem with thin soil, found in limestone regions and supporting unique plant communities.
From Swedish 'alvar' meaning 'bare rock plain'; describes ecological zones found primarily in Baltic regions where limestone creates distinctive habitats.
Alvars are nature's minimalists—with barely any soil and harsh conditions, only the toughest plants survive, creating these hidden gardens of rare wildflowers that nowhere else on Earth can support.
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