JAKARTA, Indonesia (AP) Mount Lewotobi Laki Laki , one of Indonesias most active volcanoes, erupted for a second straight day, sending a column of volcanic materials and ash up to 18 kilometers (11 miles) into the sky early Saturday and blanketing villages with debris. No casualties were immediately reported.

Another eruption Friday evening had sent clouds of ash up to 10 kilometers (6.2 miles) high and had lit up the night sky with glowing lava and bolts of lightning. The two eruptions happened in a span of less than five hours.

Indonesias Geology Agency recorded an avalanche of searing gas clouds mixed with rocks and lava traveling up to 5 kilometers (3 miles) down the slopes of the mountain. Drone observations showed deep movement of magma, setting off tremors that registered on seismic monitors.

Volcanic material, including hot thumb-sized gravel, was thrown up to 8 kilometers (5 miles) from the crater, covering nearby villages and towns with thick volcanic residue, the agency said. It asked residents to be vigilant about heavy rainfall that could trigger lava flows in rivers originating from the volcano.

Saturdays eruption was one of Indonesias largest since 2010 when Mount Merapi, the countrys most volatile volcano, erupted on the densely populated island of Java. That eruption killed more than 350 people and forced hundreds of thousands to evacuate.

It also came less than a month after a major eruption on July 7 forced the delay or cancelation of dozens of flights at Balis Ngurah Rai airport, and covered roads and rice fields with thick, gray mud and rocks.

Lewotobi Laki Laki, a 1,584-meter (5,197-foot) volcano on the remote island of Flores, has been at the highest alert level since it erupted on June 18 , and an exclusion zone has been doubled to a 7-kilometer (4.3-mile) radius as eruptions became more frequent.

The Indonesian government has permanently relocated thousands of residents after a series of eruptions there killed nine people and destroyed thousands of homes in November.

Indonesia is an archipelago of more than 280 million people with frequent seismic activity. It has 120 active volcanoes and sits along the Ring of Fire, a horseshoe-shaped series of seismic fault lines encircling the Pacific Basin.

印度尼西亚雅加达（美联社）——印度尼西亚最活跃的火山之一勒沃托比拉基拉基火山连续第二天喷发，周六清晨喷出的火山物质和火山灰柱高达18公里（11英里），并导致周边村庄被碎片覆盖。目前尚未有人员伤亡报告。

周五晚间的又一次火山喷发将火山灰云喷射至10公里（6.2英里）高空，炽热熔岩与闪电交织照亮夜空。这两次喷发间隔时间不足五小时。

印度尼西亚地质局记录到炽热的气体云与岩石和熔岩混合形成的火山碎屑流，沿山坡向下蔓延达5公里（3英里）。无人机观测显示岩浆深层活动，引发了地震监测仪记录到的震颤。

该机构称，火山喷发物（包括拇指大小的炽热碎石）被抛射至距火山口8公里（5英里）处，厚厚的火山碎屑覆盖了附近的村镇。当局提醒居民警惕强降雨可能引发的火山源河流熔岩流。

周六的火山喷发是印度尼西亚自2010年以来规模最大的一次。当时，该国最活跃的火山——梅拉皮火山在人口稠密的爪哇岛爆发，造成逾350人死亡，并迫使数十万人撤离。

此次事件距离7月7日大规模喷发尚不足一月，当时火山喷发导致巴厘岛努拉莱机场数十架航班延误或取消，厚重的灰黑色泥浆与岩石还覆盖了道路和稻田。

位于弗洛勒斯偏远岛屿上的勒沃托比拉基拉基火山（海拔1584米，合5197英尺）自6月18日喷发以来一直处于最高警戒级别。随着喷发活动日益频繁，周边隔离区范围已扩大至半径7公里（约合4.3英里）。

印度尼西亚政府已永久性迁移数千名居民，此前11月当地一系列火山喷发导致9人遇难，并摧毁了数千栋房屋。

印度尼西亚是一个拥有2.8亿多人口的群岛国家，地震活动频繁。该国分布着120座活火山，地处环绕太平洋盆地的马蹄形地震带——**火环带**（Ring of Fire）沿线。