PROBOLINGGO, Indonesia (Reuters) - The ancient thanksgiving rituals of the Kasada have been part of the lives of Indonesia's Tenggerese people for centuries. Today, the increasingly unpredictable weather has made seeking divine blessings even more vital for this farming Hindu community.

The Tenggerese live in scores of villages in a national park on Mount Bromo, one of several active volcanoes in Indonesia . The park, popular with tourists, is located near the East Java city of Probolinggo, some 800 km (500 miles) south of Jakarta.

The community have held the Kasada festival since the 13th century Majapahit Empire to express their devotion and gratitude to their ancestors and gods.

Carrying items that include vegetables, fruits as well as goats and other livestock, thousands of Tenggerese trek to the top of 2,329 meters (7641 ft) Mount Bromo, ending their ritual by hurling these offerings into the volcano's crater.

This year, the festival took place on June 21-22 and many devotees said they hoped it would help improve their livelihood.

"We pray for bountiful land for the year ahead, for the plants to grow healthy," said Asih, a 64-year old farmer in Ngadirejo village near Mount Bromo, who like many Indonesians goes by only one name.

Asih said she used to be able to harvest her cabbage farm three times a year, but due to the scarce rains, she can now only manage one harvest.

"When there are no more rains, we cannot grow another cycle of crop," Asih said. "Now they are parched like this," she said, pointing to the withered vegetables. "Once they are dried out, the roots will not grow anymore."

Last year, about two-thirds of Indonesia - including all of Java - experienced the most severe dry season since 2019 due to the El Nino weather phenomenon lasting longer than usual and causing drought that hurt crops and worsened forest fires. This year, meteorologists expect more rain, but many farmers are still struggling.

Farmers in Mount Bromo rely on rain and rain-fed lakes for irrigation, but the drier weather has forced Irawan Karyoto, 56, to plant less lucrative spring onions instead of potatoes in his 2-hectare (5 acre) plot.

Both Asih and Irawan were part of the procession of Tenggerese that offered prayers at the temple at the base of the volcano. Asih also brought her 5-year-old granddaughter.

Clutching their offerings, the worshippers then walked across sand dunes to climb to the volcano's crater.

"To respond to what the Almighty has conveyed through nature, the people must adapt and they should not forget to pray," said Suyitno, a Tenggerese spiritual leader.

(Writing by Fransiska Nangoy, Editing by Miral Fahmy)

By Willy Kurniawan and Prasto Wardoyo