By Guillermo Martinez and Ana Cantero

VILLARDEVÓS (Reuters) -Scorching heat hampered efforts to contain 20 major wildfires across Spain on Sunday, prompting the government to deploy an additional 500 troops from the military emergency unit to support firefighting operations.

In the northwestern region of Galicia, several fires have converged to form a large blaze, forcing the closure of highways and rail services to the region.

Southern Europe is experiencing one of its worst wildfire seasons in two decades, with Spain among the hardest-hit countries.

In the past week alone, fires there have claimed three lives and burned more than 115,000 hectares, while neighbouring Portugal also battles widespread blazes.

Temperatures are expected to reach up to 45 degrees Celsius (113 Fahrenheit)

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